dev-tex/biber: remove unused patch

Signed-off-by: Michael Mair-Keimberger <mmk@levelnine.at>
Signed-off-by: Florian Schmaus <flow@gentoo.org>

dev-tex/biber/files/biber-2.16-perl-5.36-semicolon.patch

@@ -1,38 +0,0 @@
-https://bugs.gentoo.org/850733
-https://github.com/plk/biber/commit/d9e961710074d266ad6bdf395c98868d91952088
-
-From d9e961710074d266ad6bdf395c98868d91952088 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com>
-Date: Wed, 25 May 2022 12:41:59 +0200
-Subject: [PATCH] Adapt to Perl 5.36
-
-A developmental release of Perl 5.36.0 fails to run tests with:
-
-    $ perl -Ilib t/basic-misc.t
-    1..72
-    Can't modify undef operator in scalar assignment at lib/Biber/Section.pm line 433, near "undef;"
-    Compilation failed in require at lib/Biber.pm line 24.
-    BEGIN failed--compilation aborted at lib/Biber.pm line 24.
-    Compilation failed in require at t/basic-misc.t line 11.
-    BEGIN failed--compilation aborted at t/basic-misc.t line 11.
-    # Looks like your test exited with 255 before it could output anything.
-
-This is because of a missing semicolon between commands in
-del_everykeys(). The new perl is more strict and raises a compile-time
-error:
-
-    $ perl -e '$a = undef $b = undef;'
-    Can't modify undef operator in scalar assignment at -e line 1, near "undef;"
-    Execution of -e aborted due to compilation errors.
---- a/lib/Biber/Section.pm
-+++ b/lib/Biber/Section.pm
-@@ -429,7 +429,7 @@ sub add_everykey {
- 
- sub del_everykeys {
-   my $self = shift;
--  $self->{everykey} = undef
-+  $self->{everykey} = undef;
-   $self->{everykey_lc} = undef;
-   return;
- }
-