Remove obsolete code from lib/gitlab/email/html_to_markdown_parser.rb
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As of now, there is this obsolete code in that ruby file:
```
# This redefinition can be removed once https://github.com/soundasleep/html2text_ruby/pull/30
# is merged and released.
def self.convert(html)
html = fix_newlines(replace_entities(html))
doc = Nokogiri::HTML(html)
new(doc).convert
end
```
the pull request that the code comment mentions (https://github.com/soundasleep/html2text_ruby/pull/30) has been merged and the newest release of html2text (0.4.0 https://github.com/soundasleep/html2text_ruby/releases/tag/v0.4.0) has that pull request merged, so therefore this obsolete code should be removed.
issue