Vcs: Collapse VcsSubmitEditorFactory hierarchy

Same pattern as for VcsSubmitFactory.

Change-Id: I7adb8868a83842c1b6c642db372a3624dd2e879e
Reviewed-by: Christian Stenger <christian.stenger@digia.com>

src/plugins/bazaar/bazaarcommitwidget.h

@@ -44,9 +44,8 @@ class BranchInfo;
 
 class BazaarCommitWidget : public VcsBase::SubmitEditorWidget
 {
-
 public:
-    explicit BazaarCommitWidget(QWidget *parent = 0);
+    BazaarCommitWidget();
 
     void setFields(const BranchInfo &branch,
                    const QString &userName, const QString &email);