Remove unused files from the gem package

[orien]

There are a bunch of files in the gem package that aren't useful for downstream projects.

Let's remove these files:

- .github/dependabot.yml
- .github/workflows/gh-pages.yml
- .github/workflows/push_gem.yml
- .github/workflows/test.yml
- .gitignore
  BSDL
  COPYING
- Gemfile
  README.md
- Rakefile
- bin/console
- bin/setup
  lib/uri.rb
  lib/uri/common.rb
  lib/uri/file.rb
  lib/uri/ftp.rb
  lib/uri/generic.rb
  lib/uri/http.rb
  lib/uri/https.rb
  lib/uri/ldap.rb
  lib/uri/ldaps.rb
  lib/uri/mailto.rb
  lib/uri/rfc2396_parser.rb
  lib/uri/rfc3986_parser.rb
  lib/uri/version.rb
  lib/uri/ws.rb
  lib/uri/wss.rb
- rakelib/sync_tool.rake
- uri.gemspec

[hsbt]

Can you remove rakelib/sync_tool.rake too?

[orien]

Can you remove rakelib/sync_tool.rake too?

Done in a0dd612