Revert "+ "drivers: net: bcmdhd: neuter net_os_rxfilter_add_remove" -> https://github.com/neobuddy89/NX-Kernel-exynos4/commit/0702eb493f553d668f582165f3cb9b7b504b387b"

This reverts commit a1fa56fbb8d1d41e31abd69ebb21df5592c18a37.

WIFI is unstable, fail to connect and disconnect.
all was OK before, so DELETE.