debugger: remove unused code

Change-Id: I105aa0433530abb4e9f53de19c0846281ccda0cf
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 remoteArchitecture;
     QString gnuTarget;
     QString symbolFileName;
     bool useServerStartScript;