reiserfs: remove unused iter variable

clang with W=1 reports
fs/reiserfs/stree.c:1265:6: error: variable
  'iter' set but not used [-Werror,-Wunused-but-set-variable]
        int iter = 0;
            ^
This variable is not used so remove it.
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Message-Id: <20230331120325.1855111-1-trix@redhat.com>

fs/reiserfs/stree.c

@@ -1262,7 +1262,6 @@ int reiserfs_delete_item(struct reiserfs_transaction_handle *th,
 
 #ifdef CONFIG_REISERFS_CHECK
 	char mode;
-	int iter = 0;
 #endif
 
 	BUG_ON(!th->t_trans_id);
@@ -1274,7 +1273,6 @@ int reiserfs_delete_item(struct reiserfs_transaction_handle *th,
 		removed = 0;
 
 #ifdef CONFIG_REISERFS_CHECK
-		iter++;
 		mode =
 #endif
 		    prepare_for_delete_or_cut(th, inode, path,