Clean headers in TextEditor.

Change-Id: Ie679e7e9d0d20a0f71dcc1fcf0f7d8305eeeeced
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>

src/plugins/texteditor/texteditoractionhandler.cpp

@@ -40,15 +40,10 @@
 #include <coreplugin/coreconstants.h>
 #include <coreplugin/actionmanager/actionmanager.h>
 #include <coreplugin/actionmanager/actioncontainer.h>
-#include <coreplugin/actionmanager/command.h>
-#include <coreplugin/editormanager/editormanager.h>
-#include <coreplugin/id.h>
 #include <utils/qtcassert.h>
 
-#include <QSet>
 #include <QDebug>
 #include <QAction>
-#include <QTextCursor>
 
 using namespace TextEditor;
 using namespace TextEditor::Internal;