From b257181ccc9cf46cfcbe085083f3ebffcd8abf09 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Fri, 15 Dec 2023 19:20:47 +0900
Subject: [PATCH] [ruby/rdoc] Remove unused method
 `RDoc::Encoding.remove_frozen_string_literal`

https://github.com/ruby/rdoc/commit/7a8e9a97fa
---
 lib/rdoc/encoding.rb | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/lib/rdoc/encoding.rb b/lib/rdoc/encoding.rb
index 8a921c7011fa42..67e190f7820e09 100644
--- a/lib/rdoc/encoding.rb
+++ b/lib/rdoc/encoding.rb
@@ -86,17 +86,6 @@ def self.read_file filename, encoding, force_transcode = false
     nil
   end
 
-  def self.remove_frozen_string_literal string
-    string =~ /\A(?:#!.*\n)?(.*\n)/
-    first_line = $1
-
-    if first_line =~ /\A# +frozen[-_]string[-_]literal[=:].+$/i
-      string = string.sub first_line, ''
-    end
-
-    string
-  end
-
   ##
   # Detects the encoding of +string+ based on the magic comment