chore($compile): removed unused variable

src/ng/compile.js

@@ -399,7 +399,6 @@ function $CompileProvider($provide) {
         // jquery always rewraps, whereas we need to preserve the original selector so that we can modify it.
         $compileNodes = jqLite($compileNodes);
       }
-      var tempParent = document.createDocumentFragment();
       // We can not compile top level text elements since text nodes can be merged and we will
       // not be able to attach scope data to them, so we will wrap them in <span>
       forEach($compileNodes, function(node, index){