debugger: remove unued gnutarget parameter

Change-Id: Ic1c663bb11f7bf9420b35686ddeb581d31242b7f
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/debugger/debuggerstartparameters.h

@@ -111,7 +111,6 @@ public:
     QString qtInstallPath;
     // Used by remote debugging.
     QString remoteChannel;
-    QString gnuTarget;
     QString symbolFileName;
     bool useServerStartScript;
     QString serverStartScript;