Remove unnecessary String.trim shim

Author: brycekahle

Changelog.md

@@ -9,6 +9,7 @@
  * Simplify build setup
  * Update to Node.js 6.9
  * Add sourcemap for minified version
+ * Remove unused String.trim shim
 
 1.1.1
 ==

lib/shims.js

@@ -434,27 +434,6 @@ if (
     };
 }
 
-// ES5 15.5.4.20
-// whitespace from: http://es5.github.io/#x15.5.4.20
-var ws = '\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003' +
-    '\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028' +
-    '\u2029\uFEFF';
-var zeroWidth = '\u200b';
-var wsRegexChars = '[' + ws + ']';
-var trimBeginRegexp = new RegExp('^' + wsRegexChars + wsRegexChars + '*');
-var trimEndRegexp = new RegExp(wsRegexChars + wsRegexChars + '*$');
-var hasTrimWhitespaceBug = StringPrototype.trim && (ws.trim() || !zeroWidth.trim());
-defineProperties(StringPrototype, {
-    // http://blog.stevenlevithan.com/archives/faster-trim-javascript
-    // http://perfectionkills.com/whitespace-deviations/
-    trim: function trim() {
-        if (this === void 0 || this === null) {
-            throw new TypeError("can't convert " + this + ' to object');
-        }
-        return String(this).replace(trimBeginRegexp, '').replace(trimEndRegexp, '');
-    }
-}, hasTrimWhitespaceBug);
-
 // ECMA-262, 3rd B.2.3
 // Not an ECMAScript standard, although ECMAScript 3rd Edition has a
 // non-normative section suggesting uniform semantics and it should be