Replace usages of ErrorReporter with Logger

Summary:
At the moment, in sonar we have an error reporter and a Logger.
ErrorReporter can be encapsulated into Logger, so users don't have to decide between logging and reporting errors.

Reviewed By: danielbuechele

Differential Revision: D8531902

fbshipit-source-id: 3986f51ea163ac939f3baffd4db3ab968f2a0762

src/fb-stubs/ErrorReporter.js

@@ -5,6 +5,11 @@
  * @format
  */
 
+/*
+ * This class exists to allow error reporting to your own service.
+ * The recommended way to use this, is to instantiate it inside LogManager,
+ * so that all logged errors get reported to this class.
+ */
 export function cleanStack(stack: string, loc: ?string) {}
 import type ScribeLogger from './ScribeLogger';