diff --git a/dev-tex/biber/files/biber-2.5-unescaped-left-brace-in-regex.patch b/dev-tex/biber/files/biber-2.5-unescaped-left-brace-in-regex.patch
deleted file mode 100644
index c84b6cdbbb96d..0000000000000
--- a/dev-tex/biber/files/biber-2.5-unescaped-left-brace-in-regex.patch
+++ /dev/null
@@ -1,12 +0,0 @@
-diff -Naur ./lib/Biber/LaTeX/Recode.pm ./lib/Biber/LaTeX/Recode.pm
---- ./lib/Biber/LaTeX/Recode.pm	2018-07-25 21:20:25.961547631 +0200
-+++ ./lib/Biber/LaTeX/Recode.pm	2018-07-25 21:20:06.653779312 +0200
-@@ -292,7 +292,7 @@
-     # Workaround perl's lack of variable-width negative look-behind -
-     # Reverse string (and therefore some of the Re) and use variable width negative look-ahead
-     $text = reverse $text;
--    $text =~ s/}(\pM+\pL){(?!\pL+\\)/$1/g;
-+    $text =~ s/}(\pM+\pL)\{(?!\pL+\\)/$1/g;
-     $text = reverse $text;
-     $logger->trace("String in latex_decode() now -> '$text'");
-