net-mail/mailbase: remove unused patch

Signed-off-by: Michael Mair-Keimberger <mmk@levelnine.at>
Closes: https://github.com/gentoo/gentoo/pull/28241
Signed-off-by: Conrad Kostecki <conikost@gentoo.org>

net-mail/mailbase/files/mailcap-r3

@@ -1,30 +0,0 @@
-# Database binding MIME types to programs that can process them.
-# This file is generally used by mail clients to view attachments.
-#
-# Users should add their own rules to their ~/.mailcap file.  That file will be
-# processed first before falling back to this one.
-#
-# For more information, see the mailcap(5) man page.
-
-# NB: Do not quote %s.  Clients will handle expanding it with proper quoting,
-# so adding quotes ourselves just confuses things.
-
-application/pdf; xdg-open %s; needsterminal
-application/postscript; xdg-open %s; needsterminal
-application/x-info; info --subnodes -o /dev/stdout -f %s 2>/dev/null; copiousoutput; description=GNU Info document
-application/x-gtar; tar tvzf -; print=tar tvzf - | print text/plain:-; copiousoutput
-application/x-tar; tar tvf -; print=tar tvf - | print text/plain:-; copiousoutput
-application/x-troff-man; nroff -mandoc -Tutf8; copiousoutput; print=nroff -mandoc -Tutf8 | print text/plain:-
-# It'd be nice to limit this to compressed formats (e.g. x-*), but the file
-# format doesn't support that, and less has good fallbacks already.
-application/*; less %s; copiousoutput; needsterminal
-
-audio/*; xdg-open %s; needsterminal
-image/*; xdg-open %s; needsterminal
-
-text/html; lynx -dump -assume_charset=%{charset} %s; copiousoutput; description=HTML Text; nametemplate=%s.html
-text/troff; man -l %s; needsterminal; description=Man page
-text/*; less %s; needsterminal
-text/*; gview %s; edit=gvim -f %s; compose=gvim -f %s; test=test "$DISPLAY" != ""
-text/*; view %s; edit=vim %s; compose=vim %s; needsterminal
-text/*; more %s; needsterminal