Remove legacy comments (e.g. references to CVS)

src/build/Common.gmake

@@ -3,8 +3,6 @@
 #
 # Global build system setup file (for GNU Make and gcc)
 #
-# $Id: Common.gmake,v 1.112 2020/05/02 01:30:46 rswindell Exp $
-#
 #############################################################################
 # @format.tab-size 4		(Plain Text/Source Code File Header)			#
 # @format.use-tabs true	(see http://www.synchro.net/ptsc_hdr.html)			#
@@ -18,21 +16,9 @@
 # See the GNU General Public License for more details: gpl.txt or			#
 # http://www.fsf.org/copyleft/gpl.html										#
 #																			#
-# Anonymous FTP access to the most recent released source is available at	#
-# ftp://vert.synchro.net, ftp://cvs.synchro.net and ftp://ftp.synchro.net	#
-#																			#
-# Anonymous CVS access to the development source and modification history	#
-# is available at cvs.synchro.net:/cvsroot/sbbs, example:					#
-# cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs login				#
-#     (just hit return, no password is necessary)							#
-# cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs checkout src		#
-#																			#
 # For Synchronet coding style and modification guidelines, see				#
 # http://www.synchro.net/source.html										#
 #																			#
-# You are encouraged to submit any modifications (preferably in Unix diff	#
-# format) via e-mail to mods@synchro.net									#
-#																			#
 # Note: If this box doesn't appear square, then you need to fix your tabs.	#
 #############################################################################
 #																			#