refactor(select): remove dead code from theme Sass

PiperOrigin-RevId: 490004132

packages/mdc-select/_select-theme.scss

@@ -168,152 +168,6 @@ $icon-inactive-fade-in-duration: 0.5 * $dropdown-transition-duration !default;
 // Error colors
 $error-color: error !default;
 
-// Implement `menu-cascading-menu-indicator-icon-color` when select supports.
-// Implement `menu-cascading-menu-indicator-icon-size` when select supports.
-// Implement `menu-container-surface-tint-layer-color` when select supports.
-// Implement `text-field-disabled-trailing-icon-color` when select supports.
-// Implement `text-field-error-focus-trailing-icon-color` when select supports.
-// Implement `text-field-error-hover-state-layer-color` when select supports.
-// Implement `text-field-error-hover-state-layer-opacity` when select supports.
-// Implement `text-field-error-hover-trailing-icon-color` when select supports.
-// Implement `text-field-error-trailing-icon-color` when select supports.
-// Implement `text-field-focus-trailing-icon-color` when select supports.
-// Implement `text-field-hover-state-layer-color` when select supports.
-// Implement `text-field-hover-state-layer-opacity` when select supports.
-// Implement `text-field-hover-trailing-icon-color` when select supports.
-// Implement `text-field-trailing-icon-color` when select supports.
-// Implement `text-field-trailing-icon-size` when select supports.
-// Token key `text-field-error-caret-color` not available on DSDB.
-// Token key `text-field-error-hover-caret-color` not available on DSDB.
-// Token key `text-field-focus-caret-color` not available on DSDB.
-// Token key `text-field-hover-caret-color` not available on DSDB.
-$_light-theme: (
-  menu-cascading-menu-indicator-icon-color: null,
-  menu-cascading-menu-indicator-icon-size: null,
-  menu-container-color: null,
-  menu-container-elevation: null,
-  menu-container-shadow-color: null,
-  menu-container-shape: null,
-  menu-container-surface-tint-layer-color: null,
-  menu-divider-color: null,
-  menu-divider-height: null,
-  menu-list-item-container-height: null,
-  menu-list-item-label-text-color: null,
-  menu-list-item-label-text-font: null,
-  menu-list-item-label-text-line-height: null,
-  menu-list-item-label-text-size: null,
-  menu-list-item-label-text-tracking: null,
-  menu-list-item-label-text-type: null,
-  menu-list-item-label-text-weight: null,
-  menu-list-item-selected-container-color: null,
-  menu-list-item-with-leading-icon-leading-icon-color: null,
-  menu-list-item-with-leading-icon-leading-icon-size: null,
-  menu-list-item-with-trailing-icon-trailing-icon-color: null,
-  menu-list-item-with-trailing-icon-trailing-icon-size: null,
-  text-field-active-indicator-color: null,
-  text-field-active-indicator-height: null,
-  text-field-caret-color: null,
-  text-field-container-color: null,
-  text-field-container-height: null,
-  text-field-container-shape: null,
-  text-field-disabled-active-indicator-color: null,
-  text-field-disabled-active-indicator-height: null,
-  text-field-disabled-active-indicator-opacity: null,
-  text-field-disabled-container-color: null,
-  text-field-disabled-container-opacity: null,
-  text-field-disabled-indicator-color: null,
-  text-field-disabled-input-text-color: null,
-  text-field-disabled-input-text-opacity: null,
-  text-field-disabled-label-text-color: null,
-  text-field-disabled-label-text-opacity: null,
-  text-field-disabled-leading-icon-color: null,
-  text-field-disabled-leading-icon-opacity: null,
-  text-field-disabled-outline-color: null,
-  text-field-disabled-outline-opacity: null,
-  text-field-disabled-outline-width: null,
-  text-field-disabled-supporting-text-color: null,
-  text-field-disabled-supporting-text-opacity: null,
-  text-field-disabled-trailing-icon-color: null,
-  text-field-disabled-trailing-icon-opacity: null,
-  text-field-error-active-indicator-color: null,
-  text-field-error-caret-color: null,
-  text-field-error-focus-active-indicator-color: null,
-  text-field-error-focus-caret-color: null,
-  text-field-error-focus-input-text-color: null,
-  text-field-error-focus-label-text-color: null,
-  text-field-error-focus-leading-icon-color: null,
-  text-field-error-focus-outline-color: null,
-  text-field-error-focus-supporting-text-color: null,
-  text-field-error-focus-trailing-icon-color: null,
-  text-field-error-hover-active-indicator-color: null,
-  text-field-error-hover-caret-color: null,
-  text-field-error-hover-input-text-color: null,
-  text-field-error-hover-label-text-color: null,
-  text-field-error-hover-leading-icon-color: null,
-  text-field-error-hover-outline-color: null,
-  text-field-error-hover-state-layer-color: null,
-  text-field-error-hover-state-layer-opacity: null,
-  text-field-error-hover-supporting-text-color: null,
-  text-field-error-hover-trailing-icon-color: null,
-  text-field-error-input-text-color: null,
-  text-field-error-label-text-color: null,
-  text-field-error-leading-icon-color: null,
-  text-field-error-outline-color: null,
-  text-field-error-supporting-text-color: null,
-  text-field-error-trailing-icon-color: null,
-  text-field-focus-active-indicator-color: null,
-  text-field-focus-active-indicator-height: null,
-  text-field-focus-caret-color: null,
-  text-field-focus-input-text-color: null,
-  text-field-focus-label-text-color: null,
-  text-field-focus-leading-icon-color: null,
-  text-field-focus-outline-color: null,
-  text-field-focus-outline-width: null,
-  text-field-focus-supporting-text-color: null,
-  text-field-focus-trailing-icon-color: null,
-  text-field-hover-active-indicator-color: null,
-  text-field-hover-active-indicator-height: null,
-  text-field-hover-caret-color: null,
-  text-field-hover-input-text-color: null,
-  text-field-hover-label-text-color: null,
-  text-field-hover-leading-icon-color: null,
-  text-field-hover-outline-color: null,
-  text-field-hover-outline-width: null,
-  text-field-hover-state-layer-color: null,
-  text-field-hover-state-layer-opacity: null,
-  text-field-hover-supporting-text-color: null,
-  text-field-hover-trailing-icon-color: null,
-  text-field-input-text-color: null,
-  text-field-input-text-font: null,
-  text-field-input-text-line-height: null,
-  text-field-input-text-size: null,
-  text-field-input-text-tracking: null,
-  text-field-input-text-type: null,
-  text-field-input-text-weight: null,
-  text-field-label-text-color: null,
-  text-field-label-text-font: null,
-  text-field-label-text-line-height: null,
-  text-field-label-text-populated-line-height: null,
-  text-field-label-text-populated-size: null,
-  text-field-label-text-size: null,
-  text-field-label-text-tracking: null,
-  text-field-label-text-type: null,
-  text-field-label-text-weight: null,
-  text-field-leading-icon-color: null,
-  text-field-leading-icon-size: null,
-  text-field-outline-color: null,
-  text-field-outline-width: null,
-  text-field-supporting-text-color: null,
-  text-field-supporting-text-font: null,
-  text-field-supporting-text-line-height: null,
-  text-field-supporting-text-size: null,
-  text-field-supporting-text-tracking: null,
-  text-field-supporting-text-type: null,
-  text-field-supporting-text-weight: null,
-  text-field-trailing-icon-color: null,
-  text-field-trailing-icon-size: null,
-);
-
 @mixin theme-styles($theme, $resolvers: resolvers.$material) {
   @include container-fill-color(
     (