FIX: Poetryのpackage-modeをfalseにする (#1171)

* FIX: Poetryの`package-mode`を`false`にする

* FIX: `tool.poetry.name, version, description, authors`を削除

pyproject.toml

@@ -37,10 +37,7 @@ multi_line_output = 3
 use_parentheses = true
 
 [tool.poetry]
-name = "voicevox_engine"
-version = "0.0.0"
-description = ""
-authors = ["Hiroshiba <[email protected]>"]
+package-mode = false
 
 [tool.poetry.dependencies]
 python = "~3.11"