v0.7.0: fixed alchemy scene resetting clearing provider

(removing this check should be fined as provider is always set when scene is switched to)

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/scenes/AlchemyScene.java

@@ -402,8 +402,6 @@ public class AlchemyScene extends PixelScene {
 			}
 		}
 		
-		provider = null;
-		
 		try {
 			Dungeon.saveAll();
 			Badges.saveGlobal();