staging: rtl8192e: Remove unused variables rxdatacrcerr and rxmgmtcrcerr

rxdatacrcerr and rxmgmtcrcerr are initialized and increased but never
read. Remove dead code.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/32c9183fa2f4edd24ae6f93d56b808eb1821832b.1674675808.git.philipp.g.hortmann@gmail.com


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