remove removed shop locations from relevant caches

Main.py

@@ -263,6 +263,11 @@ def main(args, seed=None):
 
     logger.info('Patching ROM.')
 
+    # remove locations that may no longer exist from caches, by flushing them entirely
+    if shop_slots:
+        world.clear_location_cache()
+        world._location_cache = {}
+
     outfilebase = 'BM_%s' % (args.outputname if args.outputname else world.seed)
 
     rom_names = []