Revert "Modified [metasploit] PKGBUILD to work with git, Add [ruby-fivemat], [ruby-redcarpet], [ruby-shoulda-matchers], [ruby-simplecov], [ruby-simplecov-html], [ruby-timecop], [ruby-yard]"

This reverts commit cb920c7dbf34a437509519741da3df06a70c48c0.

Conflicts:
	packages/metasploit/PKGBUILD
	packages/ruby-timecop/PKGBUILD

This package has dependency issues. There is a new branch for it called
'metasploit'. We will merge it back once the package works.
CONTRIBUTING: Remove the 'more rules' sections.