revert:docs(guide/scope): access the current element's scope in the console

This reverts commit c6bd58e.
The recommended approach of just typing scope does not appear to work out of the box.

See angular#4884 (comment)

Author: petebacondarwin

docs/content/guide/scope.ngdoc

@@ -183,7 +183,7 @@ To examine the scope in the debugger:
   2. The debugger allows you to access the currently selected element in the console as `$0`
     variable.
 
-  3. To retrieve the associated scope in console execute: `angular.element($0).scope()` or just type $scope
+  3. To retrieve the associated scope in console execute: `angular.element($0).scope()`
 
 
 ## Scope Events Propagation