diff --git a/src/tchap/util/TchapUIFeature.ts b/src/tchap/util/TchapUIFeature.ts
index 0af8523906..1edf29dbfc 100644
--- a/src/tchap/util/TchapUIFeature.ts
+++ b/src/tchap/util/TchapUIFeature.ts
@@ -2,8 +2,6 @@
  * Tchap UI Feature flags
  */
 
-import SdkConfig from "matrix-react-sdk/src/SdkConfig";
-
 export default class TchapUIFeature {
     /**
      * This flag controls weither space related settings should be displayed or not. It differs from the flag UIComponent.CreateSpaces.
@@ -26,43 +24,4 @@ export default class TchapUIFeature {
      */
     public static activateClearCacheAndReloadAtVersion4 = true;
 
-    /**
-     * @deprecated
-     * This flag controls whether to activate cross-signing and secure storage. It is not static because the MatrixClient
-     * needs to be initialized to access the config.json (where the flag is set)
-     */
-    public static isCrossSigningAndSecureStorageActive = (): Boolean => {
-        //retrieve the feature flag from the config.json features flag section.
-        //beware SdkConfig does not like to be invoked before the MatrixClient is initialized
-        // const isCrossSigningAndSecureStorageActive =
-        //     SdkConfig.get("features")["tchap_activate_cross_signing_and_secure_storage"];
-        // console.log(
-        //     ":tchap: tchap_activate_cross_signing_and_secure_storage from config.json: ",
-        //     isCrossSigningAndSecureStorageActive,
-        // );
-        const isCrossSigningAndSecureStorageActive = true;
-        return isCrossSigningAndSecureStorageActive;
-    };
-
-    /**
-     * @deprecated
-     * This flag activates cross-signing and secure storage. But it also hides the xsss setup toast.
-     * needs to be initialized to access the config.json (where the flag is set)
-     */
-    public static isCrossSigningSetupToastDisabled = (): Boolean => {
-        //retrieve the feature flag from the config.json features flag section.
-        //beware SdkConfig does not like to be invoked before the MatrixClient is initialized
-        //const isCrossSigningSetupToastDisabled = SdkConfig.get("features")["tchap_disable_cross_signing_setup_toast"];
-        // console.log(
-        //     ":tchap: tchap_disable_cross_signing_setup_toast from config.json: ",
-        //     isCrossSigningSetupToastDisabled,
-        // );
-        const isCrossSigningSetupToastDisabled = false;//cross signing setup toast must be activated
-        return isCrossSigningSetupToastDisabled;
-    };
-
-    /**
-     * This flag controls whether to force incoming key legacy verification (usefull for older mobile device than android 2.6, ios 2.2.3)
-     */
-    public static forceLegacyIncomingRoomKeyVerification = false;
 }