staging: rtl8723bs: remove DBG_COUNTER calls from os_dep/xmit_linux.c

Remove all DBG_COUNTER macro calls from os_dep/xmit_linux.c, as the
corresponding variables are only ever written to and not used. This
makes the code cleaner, and is necessary prior to removing the
DBG_COUNTER definition itself.

Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210215233440.80617-3-phil@philpotter.co.uk


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>