Undo @Nullsafe on ReactBuildConfig

Summary:
Adding NullSafe on ReactBuildConfig is bringing issues in some apps, I'm reverting the change

bypass-github-export-checks

changelog: [internal] internal

Reviewed By: philIip

Differential Revision: D53434280

fbshipit-source-id: 865f303c41e8e6d6fdd04f12756a7277ec053777

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/common/build/ReactBuildConfig.java

@@ -7,7 +7,6 @@
 
 package com.facebook.react.common.build;
 
-import com.facebook.infer.annotation.Nullsafe;
 import com.facebook.react.BuildConfig;
 
 /**
@@ -16,7 +15,6 @@ import com.facebook.react.BuildConfig;
  * and b) we don't have to deal with IntelliJ getting confused about the autogenerated BuildConfig
  * class all over the place.
  */
-@Nullsafe(Nullsafe.Mode.LOCAL)
 public class ReactBuildConfig {
 
   public static final boolean DEBUG = BuildConfig.DEBUG;