Revert "New rule: requireObjectShorthand"

This reverts commit 0e269c5.

Author: markelog

grouping.json

@@ -162,8 +162,7 @@
     "requireObjectDestructuring",
     "requireEnhancedObjectLiterals",
     "requireArrayDestructuring",
-    "disallowVar",
-    "requireObjectShorthand"
+    "disallowVar"
   ],
   "Everything else": [
     "requireParenthesesAroundIIFE",

lib/config/configuration.js

@@ -953,7 +953,6 @@ Configuration.prototype.registerDefaultRules = function() {
     this.registerRule(require('../rules/require-enhanced-object-literals'));
     this.registerRule(require('../rules/require-array-destructuring'));
     this.registerRule(require('../rules/disallow-var'));
-    this.registerRule(require('../rules/require-object-shorthand'));
     /* ES6 only (end) */
 
     this.registerRule(require('../rules/require-curly-braces'));