staging: rtl8723bs: remove all MSG_8192C logs

remove all MSG_8192C logs.

MSG_8192C is a private trace mechanism macro and is deactivated.
(i.e. the default behaviour is _do nothing_)
The only way to activate it is to manually define a debug
symbol.

So just remove it.

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/fa7f52aa90928dc86b3249ca9c5b27f92c2b071b.1617971592.git.fabioaiuto83@gmail.com


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