TextEditor: Further *Editor/*EditorWidget disentangling

In most cases, the *Editor constructor does not need to
access the *EditorWidget.

Change-Id: I1f5c076a0f723d5d82b398e8c250c7bd1d47eb17
Reviewed-by: Christian Stenger <christian.stenger@digia.com>

src/plugins/pythoneditor/pythoneditor.cpp

@@ -47,8 +47,7 @@
 namespace PythonEditor {
 namespace Internal {
 
-PythonEditor::PythonEditor(PythonEditorWidget *editorWidget)
-    :BaseTextEditor(editorWidget)
+PythonEditor::PythonEditor()
 {
     setContext(Core::Context(Constants::C_PYTHONEDITOR_ID,
                              TextEditor::Constants::C_TEXTEDITOR));