staging: rtl8192e: remove empty cases from switch statements

Rmove empty cases from switch statements to improve readability.
All of these empty cases are covered by a default case already.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/20240222112723.18428-3-straube.linux@gmail.com


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