staging: rtl8723bs: Remove unused file rtw_rf.c

Remove unused file rtw_rf.c

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/2a31866e3e6f65e90d612f7473501066f6bc5937.1725826273.git.philipp.g.hortmann@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: Philipp Hortmann

drivers/staging/rtl8723bs/Makefile

@@ -11,7 +11,6 @@ r8723bs-y = \
 		core/rtw_mlme_ext.o \
 		core/rtw_pwrctrl.o \
 		core/rtw_recv.o \
-		core/rtw_rf.o \
 		core/rtw_security.o \
 		core/rtw_sta_mgt.o \
 		core/rtw_wlan_util.o \