Cleanup unused deprecated syntax enforcement opt-out for react-native (#57428)

Summary:
Pull Request resolved: #57428

Changelog: [Internal]

Reviewed By: gkz

Differential Revision: D110600695

fbshipit-source-id: 4b66eaa667fe01e057e8dba5781b52d2346aa46f

Author: SamChou19815

.flowconfig

@@ -64,11 +64,6 @@ module.system.haste.module_ref_prefix=m#
 
 react.runtime=automatic
 
-experimental.deprecated_utilities.excludes=<PROJECT_ROOT>/packages/react-native/Libraries/Renderer/shims/ReactNativeTypes.js
-experimental.deprecated_utilities.excludes=<PROJECT_ROOT>/packages/react-native/Libraries/Renderer/shims/ReactNativeViewConfigRegistry.js
-experimental.deprecated_colon_extends.excludes=<PROJECT_ROOT>/packages/react-native/Libraries/Renderer/shims/ReactNativeTypes.js
-experimental.deprecated_variance_sigils.excludes=<PROJECT_ROOT>/packages/react-native/Libraries/Renderer/shims/ReactNativeTypes.js
-
 ban_spread_key_props=true
 
 [lints]