Revert "Erase queued commands when another command is about to be queued."

This reverts commit 604205045f.

src/dock_gui.cpp

@@ -168,7 +168,6 @@ struct BuildDocksToolbarWindow : Window {
 
 	virtual void OnPlaceObject(Point pt, TileIndex tile)
 	{
-		EraseQueuedTouchCommand();
 		switch (this->last_clicked_widget) {
 			case WID_DT_CANAL: // Build canal button
 				VpStartPlaceSizing(tile, (_game_mode == GM_EDITOR) ? VPM_X_AND_Y : VPM_X_OR_Y, DDSP_CREATE_WATER);