generate.pl: Drop maintainer label

zakame · zakame · commit ddb1ace4bd9f · 2023-12-20T14:26:00.000+08:00
Most users don't override this label so it can create confusion on image provenance.
diff --git a/generate.pl b/generate.pl
@@ -287,7 +287,6 @@ =head1 DESCRIPTION
 
 __DATA__
 FROM {{image}}:{{tag}}
-LABEL maintainer="Peter Martini <PeterCMartini@GMail.com>, Zak B. Elep <zakame@cpan.org>"
 
 {{docker_copy_perl_patch}}
 WORKDIR /usr/src/perl
