staging: rtl8723bs: remove DBG_8192C macro definitions

remove all DBG_8192C macro definitions.

Macro DBG_8192C belongs to a family of verbose
private tracing macros.

The default behaviour is _do nothing_, to activate
it one should define DEBUG symbol by hand.

So just remove it

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/e7259eeb5927d48a2920548b92dc507befa5e6af.1618064274.git.fabioaiuto83@gmail.com


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