Revert "Deprecate global Homebrew.args."

[MikeMcQuaid]

Reverts #8216

This is causing issues in Homebrew/homebrew-test bot. These shouldn't be deprecated until all usages are removed in #8187 (so I'd suggest it's rolled into that).

CC @reitermarkus

[reitermarkus]

This is causing issues in Homebrew/homebrew-test bot.

Where?

[Bo98]

Because Homebrew.args is used in places in Homebrew/brew (fixed by #8187) that homebrew-test-bot invokes.

In the test-bot environment, all deprecations promoted to fatal errors.

e.g.

==> Using Homebrew/homebrew-test-bot a1f8223 (Merge pull request #462 from MikeMcQuaid/allowed_taps)

==> Running Formulae#detect_formulae!
==> Testing Homebrew/homebrew-core f917b657bfc (Merge dc7e4ba69f78c09f66ab3ede08c75304dcfc4d85 into 85250e720999af2009cdf2128d66bd30b75423ab):
    url             https://github.com/Homebrew/homebrew-core/pull/59205/checks
    origin/master   85250e72099 (ghc@8.6: add linux resource)
    HEAD            f917b657bfc (Merge dc7e4ba69f78c09f66ab3ede08c75304dcfc4d85 into 85250e720999af2009cdf2128d66bd30b75423ab)
    diff_start_sha1 85250e720999af2009cdf2128d66bd30b75423ab
    diff_end_sha1   f917b657bfccbc4951ac7083261b0c157d529973
/usr/local/Homebrew/Library/Homebrew/compat/cli/parser.rb:14:in `method_missing': Calling Homebrew.args is deprecated! Use `args = <command>_args.parse` and pass `args` along the call chain instead. (MethodDeprecatedError)
	from /usr/local/Homebrew/Library/Homebrew/help.rb:99:in `parser_help'
	from /usr/local/Homebrew/Library/Homebrew/help.rb:80:in `command_help'
	from /usr/local/Homebrew/Library/Homebrew/help.rb:61:in `help'
	from /usr/local/Homebrew/Library/Homebrew/brew.rb:141:in `rescue in <main>'
	from /usr/local/Homebrew/Library/Homebrew/brew.rb:38:in `<main>'