staging: r8188eu: remove unneeded semicolon

Eliminate the following coccicheck warning:
./drivers/staging/r8188eu/hal/rtl8188e_rxdesc.c:73:66-67: Unneeded
semicolon
./drivers/staging/r8188eu/hal/rtl8188e_hal_init.c:2225:68-69: Unneeded
semicolon
./drivers/staging/r8188eu/core/rtw_xmit.c:615:75-76: Unneeded semicolon

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/1629450505-28247-1-git-send-email-yang.lee@linux.alibaba.com


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