CMake: Show more variables in config widget

By reducing the height of the editors for the items. At least shows 10
instead of 9 items in the same space on macOS now, and looks less
wasteful.

Change-Id: I422a772cad52a2fcc8223d188b32d8d8adf9bf95
Reviewed-by: Cristian Adam <cristian.adam@qt.io>

src/plugins/cmakeprojectmanager/configmodelitemdelegate.h

@@ -49,7 +49,6 @@ public:
 
 private:
     Utils::FilePath m_base;
-    QComboBox m_measurement;
 };
 
 } // namespace CMakeProjectManager