staging: rtl8192e: Remove unused variables rxint, ints and shints

rxint, ints and shints 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/ee6ee009d139a3da3d2c171d7ac6454271b4da9b.1674675808.git.philipp.g.hortmann@gmail.com


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