[Midnightbsd-cvs] src: Makefile: drop ath_hal build file

[laffer1 at midnightbsd.org]

Log Message:
-----------
drop ath_hal build file

Removed Files:
-------------
    src/sys/modules/ath_hal:
        Makefile
        (http://cvsweb.midnightbsd.org/src/sys/modules/ath_hal/Makefile)