RN: Delete StyleSheetValidation

Summary:
Deletes `StyleSheetValidation` because it is `prop-types` in disguise.

Changelog:
[General][Removed] - `StyleSheet.create` will no longer do DEV-time validation.

Reviewed By: TheSavior

Differential Revision: D29019310

fbshipit-source-id: bfe886d8dc09a1aa8dac4a73bfd62f481e3eb9e9

Author: yungsters

Libraries/StyleSheet/StyleSheet.js

@@ -12,7 +12,6 @@
 
 const PixelRatio = require('../Utilities/PixelRatio');
 const ReactNativeStyleAttributes = require('../Components/View/ReactNativeStyleAttributes');
-const StyleSheetValidation = require('./StyleSheetValidation');
 
 const flatten = require('./flattenStyle');
 
@@ -363,7 +362,6 @@ module.exports = {
     // return value as a number (even though it was opaque).
     if (__DEV__) {
       for (const key in obj) {
-        StyleSheetValidation.validateStyle(key, obj);
         if (obj[key]) {
           Object.freeze(obj[key]);
         }

Libraries/StyleSheet/StyleSheetValidation.js

@@ -11,15 +11,9 @@
 'use strict';
 
 const StyleSheet = require('../StyleSheet');
-const StyleSheetValidation = require('../StyleSheetValidation');
 const flattenStyle = require('../flattenStyle');
 
 function getFixture() {
-  StyleSheetValidation.addValidStylePropTypes({
-    styleA: () => {},
-    styleB: () => {},
-  });
-
   return StyleSheet.create({
     elementA: {
       styleA: 'moduleA/elementA/styleA',