proxy: correctly use the RemoteApp flag

The flag was forcing the remoteApp usage when set, while all the other equivalent
flags just enable the feature. This patch fixes that, so now setting RemoteApp = TRUE
just enables the front client to do remoteApps.

server/proxy/pf_client.c

@@ -270,7 +270,6 @@ static BOOL pf_client_pre_connect(freerdp* instance)
 	                               config->DeviceRedirection) ||
 	    !freerdp_settings_set_bool(settings, FreeRDP_SupportDisplayControl,
 	                               config->DisplayControl) ||
-	    !freerdp_settings_set_bool(settings, FreeRDP_RemoteApplicationMode, config->RemoteApp) ||
 	    !freerdp_settings_set_bool(settings, FreeRDP_MultiTouchInput, config->Multitouch))
 		return FALSE;