Removed Sprite dependency for general class test

Signed-off-by: Simon Bailey <simon@newtriks.com>

lib/gator/as3/generators/test/asunit4/klass.as.tt

@@ -2,28 +2,20 @@ package <%= package_name %>
 {
 	import asunit.asserts.*;
 
-	import flash.display.Sprite;
-
     public class <%= class_name %>
     {
-		[Inject]
-	    public var context:Sprite;
-
 		private var instance:<%= instance_name %>;
 
 		[Before]
 		public function setUp():void
 		{
 		    instance=new <%= instance_name %>();
-		    context.addChild(instance);
 		}
 
 		[After]
 		public function tearDown():void
 		{
-		    context.removeChild(instance);
 		    instance=null;
-		    context=null;
 		}
 
 		[Test]