Remove residual blank line at start of Makefile

This is a residual of the $FreeBSD$ removal.

MFC After: 3 days (though I'll just run the command on the branches)
Sponsored by: Netflix

Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

beep(1): Initial version of utility to create terminal beep via soundcard.

Reviewed by: imp@, emaste@ and pstef@
Differential Revision: https://reviews.freebsd.org/D32672
MFC after: 1 week
Sponsored

beep(1): Initial version of utility to create terminal beep via soundcard.

Reviewed by: imp@, emaste@ and pstef@
Differential Revision: https://reviews.freebsd.org/D32672
MFC after: 1 week
Sponsored by: NVIDIA Networking

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