Vcs: Move createCommand and enqueueJob into VcsBaseClientImpl

Change-Id: I86a4ddfd6c53a3be61c56579d8eaf5d49258a8f1
Reviewed-by: Tobias Hunger <tobias.hunger@theqtcompany.com>

src/plugins/git/giteditor.h

@@ -51,8 +51,6 @@ public:
 
 public slots:
     void setPlainTextFiltered(const QString &text);
-    // Matches the signature of the finished signal of GitCommand
-    void commandFinishedGotoLine(bool ok, int exitCode, const QVariant &v);
 
 private slots:
     void checkoutChange();