Removed import of url module in browser build due to significant size overhead; (#4594)

Removed pointless `Malformed URL` checking in  client build;

lib/utils.js

@@ -22,22 +22,6 @@ function kindOfTest(type) {
   };
 }
 
-/**
- * Array with axios supported protocols.
- */
-var supportedProtocols = [ 'http:', 'https:', 'file:' ];
-
-/**
- * Returns URL protocol passed as param if is not undefined or null,
- * otherwise just returns 'http:'
- *
- * @param {String} protocol The String value of URL protocol
- * @returns {String} Protocol if the value is not undefined or null
- */
-function getProtocol(protocol) {
-  return protocol || 'http:';
-}
-
 /**
  * Determine if a value is an Array
  *
@@ -453,8 +437,6 @@ var isTypedArray = (function(TypedArray) {
 })(typeof Uint8Array !== 'undefined' && Object.getPrototypeOf(Uint8Array));
 
 module.exports = {
-  supportedProtocols: supportedProtocols,
-  getProtocol: getProtocol,
   isArray: isArray,
   isArrayBuffer: isArrayBuffer,
   isBuffer: isBuffer,