Remove unnecessary -Wno-error=cpp (#49746)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/49746

This flag is no longer necessary since RN 0.73 so I'm cleaning it up.

Changelog:
[Internal] [Changed] -

Reviewed By: rshest

Differential Revision: D70386741

fbshipit-source-id: c2c8f998fa7b97985396b26345cfcf3474effc7b

packages/react-native/ReactAndroid/cmake-utils/ReactNative-application.cmake

@@ -64,11 +64,6 @@ target_compile_options(${CMAKE_PROJECT_NAME}
         PRIVATE
                 -Wall
                 -Werror
-                # We suppress cpp #error and #warning to don't fail the build
-                # due to use migrating away from
-                # #include <react/renderer/graphics/conversions.h>
-                # This can be removed for React Native 0.73
-                -Wno-error=cpp
                 -fexceptions
                 -frtti
                 -std=c++20