Remove e_client_transform_core_update in e_client_transform_core_remove

Remove e_client_transform_core_update in e_client_transform_core_remove

When we change or replace some transform (remove old transform and add new transform),
there was an unnecessary calculation for removing old transform because of calling
e_client_transform_core_update in e_client_transform_core_remove().
So, we remove e_client_transform_core_update in e_client_transform_core_remove.

FYI,
e_client_transform_core_update is called in idler_before handler(exactly _e_client_eval).
If we want to apply transform immediately, we have to call e_client_transform_core_update
after calling e_client_transform_core_remove.

Change-Id: I17b2cbb360769ca69793d6ca55cffab4178feba4