char: pcmcia: cm4000_cs: Remove unused variable 'tmp'

char: pcmcia: cm4000_cs: Remove unused variable 'tmp'

Fixes the following W=1 kernel build warning(s):

 drivers/char/pcmcia/cm4000_cs.c: In function ‘cmm_write’:
 drivers/char/pcmcia/cm4000_cs.c:1053:16: warning: variable ‘tmp’ set but not used [-Wunused-but-set-variable]

Cc: Harald Welte <laforge@gnumonks.org>
Cc: "cs.c" <support.linux@omnikey.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20210520121347.3467794-2-lee.jones@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>