Stop searching for externalized Vue templates in HAML

With https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/10669 we
introduced parsing and extracting and externalized strings in Vue
templates in HAML.

We have recently stopped writing Vue templates inside of HAML for
performance reasons and due to security concerns:

 -  https://gitlab.com/groups/gitlab-org/-/epics/5301
 -  https://gitlab.com/gitlab-org/gitlab/-/merge_requests/53922

Therefore we can stop searching for them in HAML files.

config/initializers/gettext_rails_i18n_patch.rb

 # frozen_string_literal: true
 
-require 'gettext_i18n_rails/haml_parser'
 require 'gettext_i18n_rails_js/parser/javascript'
 require 'json'
 
-VUE_TRANSLATE_REGEX = /((%[\w.-]+)(?:\s))?{{ (N|n|s)?__\((.*)\) }}/.freeze
-
-module GettextI18nRails
-  class HamlParser
-    singleton_class.send(:alias_method, :old_convert_to_code, :convert_to_code)
-
-    # We need to convert text in Mustache format
-    # to a format that can be parsed by Gettext scripts.
-    # If we found a content like "{{ __('Stage') }}"
-    # in a HAML file we convert it to "= _('Stage')", that way
-    # it can be processed by the "rake gettext:find" script.
-    #
-    # Overwrites: https://github.com/grosser/gettext_i18n_rails/blob/8396387a431e0f8ead72fc1cd425cad2fa4992f2/lib/gettext_i18n_rails/haml_parser.rb#L9
-    def self.convert_to_code(text)
-      text.gsub!(VUE_TRANSLATE_REGEX, "\\2= \\3_(\\4)")
-
-      old_convert_to_code(text)
-    end
-  end
-end
-
 module GettextI18nRailsJs
   module Parser
     module Javascript