ext4: remove unused argument from ext4_(inc|dec)_count

The 'handle' argument is not used for anything so simply remove it.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Ritesh Harjani <riteshh@linux.ibm.com>
Link: https://lore.kernel.org/r/20200826133116.11592-1-nborisov@suse.com


Signed-off-by: Theodore Ts'o <tytso@mit.edu>