Don't delete save file on clean

makefile

 
 .PHONY: clean
 clean:
-	rm -R -f build/*
+	rm -f  $(OUTPATH)/__symbols.sym $(OUTPATH)/pkmn_sots.gba
 	rm -R -f object/*
 	$(MAKE) -C $(dir $(MUSIC_AR)) clean
 	$(MAKE) -C $(dir $(SMPL_AR)) clean