Android: Remove traces of special debugger setup

Change-Id: Ibf85a6e6e7c025287dd388bc5908cefc30fbaa2f
Reviewed-by: BogDan Vatra <bogdan@kdab.com>

src/plugins/debugger/debuggerruncontrol.h

@@ -136,9 +136,6 @@ public:
 
     Internal::TerminalRunner *terminalRunner() const;
 
-signals:
-    void aboutToNotifyInferiorSetupOk();
-
 private:
     bool fixupParameters();