staging: rtl8821ae: deal with unused functions in halbtcoutsrc.c
staging: rtl8821ae: deal with unused functions in halbtcoutsrc.c

This commit fixes the compiler -Wunused-function warning. Several
functions had to be removed.

Removed symbols

    halbtc_is_hw_mailbox_exist
    halbtc_set_macreg
    halbtc_get_macreg
    halbtc_under_ips

Signed-off-by: Konrad Zapalowicz <9f857aee3211b6de08da31d3f0b9b3ca7d839539@gmail.com>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs