staging: rtl8192e: Remove used constants MSR_LINK_SH.. and MSR_LINK_N..

Remove used constants MSR_LINK_SHIFT = 0 and MSR_LINK_NONE = 0. Use rules
a << 0 = a, 0 << 0 = 0 and msr | 0 = msr to remove dead code.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/46bd1f075d5e4d211e1fc827843933907f7fee29.1675003608.git.philipp.g.hortmann@gmail.com


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