account_edit_processing.php: fix player deletion
account_edit_processing.php: fix player deletion

* Remove deletion from tables that no longer exist.

* Simplify the SQL by storing the game_id/account_id part of the
  statement to reuse in each query.

smrealms/smr,hemberger/smr,hemberger/smr,smrealms/smr,hemberger/smr,hemberger/smr,smrealms/smr