ath79: mikrotik: remove rb912 gpio-beeper module dependency

The beeper is currently not fully functional and has also
been removed from DTS.

Also remove the dependency for the gpio-beeper module.

Fixes: 695a1cd53c ("ath79: add support for MikroTik RouterBOARD 912UAG-2HPnD")
Signed-off-by: Koen Vandeputte <[email protected]>

target/linux/ath79/image/mikrotik.mk

@@ -13,7 +13,7 @@ define Device/mikrotik_routerboard-912uag-2hpnd
   $(Device/mikrotik_nand)
   SOC := ar9342
   DEVICE_MODEL := RouterBOARD 912UAG-2HPnD
-  DEVICE_PACKAGES += kmod-usb-ehci kmod-usb2 kmod-gpio-beeper
+  DEVICE_PACKAGES += kmod-usb-ehci kmod-usb2
   SUPPORTED_DEVICES += rb-912uag-2hpnd
 endef
 TARGET_DEVICES += mikrotik_routerboard-912uag-2hpnd