staging: rtl8192e: Remove unused variable bDriverIsGoingToUnload

bDriverIsGoingToUnload is never evaluated. Remove resulting dead code.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/48a84cbe359f159cc9c296b261256a405ee3884e.1664616227.git.philipp.g.hortmann@gmail.com


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