Debugger: Simplify tooltip interface

Change-Id: I7ce688e56fb516ef6e77ee2e4f56d9b56379918b
Reviewed-by: David Schulz <david.schulz@digia.com>
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/debugger/cdb/cdbengine.h

@@ -76,7 +76,7 @@ public:
 
     // Factory function that returns 0 if the debug engine library cannot be found.
 
-    virtual bool setToolTipExpression(const QPoint &mousePos, TextEditor::ITextEditor *editor,
+    virtual bool setToolTipExpression(TextEditor::ITextEditor *editor,
                                       const DebuggerToolTipContext &ctx);
     virtual void setupEngine();
     virtual void setupInferior();