Simplify JS code causing browser console warnings

ext/intro.js

@@ -295,18 +295,6 @@
    */
   function _previousStep() {
       return;
-    this._direction = 'backward';
-    
-    if (this._currentStep === 0) {
-      return false;
-    }
-
-    var nextStep = this._introItems[--this._currentStep];
-    if (typeof (this._introBeforeChangeCallback) !== 'undefined') {
-      this._introBeforeChangeCallback.call(this, nextStep.element);
-    }
-
-    _showElement.call(this, nextStep);
   }
 
   /**

factories/Util.js

@@ -264,28 +264,6 @@
 	}
 	
 	var accelDevice = false; 
-	
-	function redirectClient(val) {
-		return;
-		var qs = location.search.substr(1);
-		var newQs = '?';
-
-		$.each(qs.split('&'), function (i, s) {
-			if (i > 0) {
-				newQs += '&';
-			}
-			if (s.indexOf('client') !== 0) {
-				newQs += s;
-
-			}
-		});
-		if (newQs.length > 1) {
-			newQs += '&';
-		}
-		newQs += 'client=' + val;
-		location.href = '/webclient' + newQs + location.hash;
-		
-	}
 
 	function isAccelDevice() {
 		return accelDevice;