QmlJS: Remove Interpreter namespace.

The distinction between QmlJS and QmlJS::Interpreter has always been
weak and the extra namespace just added an unnecessary complication.

Change-Id: I4db8ef4bd91b5f6bf610a9d23fdbf55bd60250fc
Reviewed-on: http://codereview.qt.nokia.com/2743
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@nokia.com>

src/libs/qmljs/qmljsscopebuilder.cpp

@@ -39,7 +39,6 @@
 #include "parser/qmljsast_p.h"
 
 using namespace QmlJS;
-using namespace QmlJS::Interpreter;
 using namespace QmlJS::AST;
 
 ScopeBuilder::ScopeBuilder(ScopeChain *scopeChain)