staging: rtl8192e: Remove is_mesh from rtl92e_set_swcam

Function rtl92e_set_swcam() has parameter is_mesh which is in all calls 0.
Remove dead code.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/5d324977054f3a27b89c5c73da82e9c01c6dca45.1690615475.git.philipp.g.hortmann@gmail.com


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