Sped up teleporting even more, + fixed isSneaking

src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java

@@ -170,9 +170,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
             entity.a.e = newEntity;
             entity = newEntity;
         } else {
-            oldWorld.manager.b(entity);
             entity.a.a(location.getX(), location.getY(), location.getZ(), location.getYaw(), location.getPitch());
-            newWorld.manager.a(entity);
         }
     }
 
@@ -181,7 +179,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
     }
 
     public boolean isSneaking() {
-        return entity.J();
+        return entity.U();
     }
     
     public void updateInventory() {