4265 remove INTERNAL_RELEASE_BUILD

@@ -419,18 +419,10 @@
 The release date text to be used; e.g., October 2009. If not set in
 your environment file, then this text defaults to the output from
 $(LC_ALL=C date +"%B %Y"); e.g., "October 2009".
 .RE
 .LP
-.B INTERNAL_RELEASE_BUILD
-.RS 5
-See Makefile.master - but it mostly controls id strings. Generally,
-let
-.I nightly
-set this for you.
-.RE
-.LP
 .B RELEASE_BUILD
 .RS 5
 Define this to build a release with a non-DEBUG kernel. 
 Generally, let
 .I nightly