staging: rtl8192e: Remove empty function rtllib_rx_Master()

Function rtllib_rx_Master() returns always 0. Variable ret is already
initialized with 0. Remove dead code.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/9604360121c5547cfaa282f73af5b948cdfbd769.1690615475.git.philipp.g.hortmann@gmail.com


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