Use `debug` instead of `console.warn`

Reviewed By: voideanvalue

Differential Revision: D2636111

fb-gh-sync-id: d21ec56045461353317348c4da14c92be8015bd3

packager/react-packager/src/DependencyResolver/DependencyGraph/ResolutionRequest.js

@@ -70,7 +70,7 @@ class ResolutionRequest {
         throw error;
       }
 
-      console.warn(
+      debug(
         'Unable to resolve module %s from %s',
         toModuleName,
         fromModule.path