refactor(gem): favor built-in zsh completion for `gem` (#12576)

Completion for `gem` was included in zsh 5.5 and newer. This change
only uses the Oh My Zsh one if running an older version.

Reference: https://github.com/zsh-users/zsh/commit/9881778d48caf842f794d986bc9befebf0fb01c2

1 files changed, 0 insertions, 72 deletions

diff --git a/plugins/gem/_gem b/plugins/gem/_gem
deleted file mode 100644
index 92feebe95..000000000
--- a/plugins/gem/_gem
+++ /dev/null
@@ -1,72 +0,0 @@
-#compdef gem
-#autoload
-
-# gem zsh completion, based on homebrew completion
-
-_gem_installed() {
-  installed_gems=(${(f)"$(gem list --local --no-versions)"})
-}
-
-local -a _1st_arguments
-
-_1st_arguments=(
-  'build:Build a gem from a gemspec'
-  'cert:Manage RubyGems certificates and signing settings'
-  'check:Check a gem repository for added or missing files'
-  'cleanup:Clean up old versions of installed gems in the local repository'
-  'contents:Display the contents of the installed gems'
-  'dependency:Show the dependencies of an installed gem'
-  'environment:Display information about the RubyGems environment'
-  'fetch:Download a gem and place it in the current directory'
-  'generate_index:Generates the index files for a gem server directory'
-  'help:Provide help on the `gem` command'
-  'install:Install a gem into the local repository'
-  'list:Display gems whose name starts with STRING'
-  'lock:Generate a lockdown list of gems'
-  'mirror:Mirror all gem files (requires rubygems-mirror)'
-  'outdated:Display all gems that need updates'
-  'owner:Manage gem owners on RubyGems.org.'
-  'pristine:Restores installed gems to pristine condition from files located in the gem cache'
-  'push:Push a gem up to RubyGems.org'
-  'query:Query gem information in local or remote repositories'
-  'rdoc:Generates RDoc for pre-installed gems'
-  'search:Display all gems whose name contains STRING'
-  'server:Documentation and gem repository HTTP server'
-  'sources:Manage the sources and cache file RubyGems uses to search for gems'
-  'specification:Display gem specification (in yaml)'
-  'stale:List gems along with access times'
-  'uninstall:Uninstall gems from the local repository'
-  'unpack:Unpack an installed gem to the current directory'
-  'update:Update installed gems to the latest version'
-  'which:Find the location of a library file you can require'
-  'yank:Remove a specific gem version release from RubyGems.org'
-)
-
-local expl
-local -a gems installed_gems
-
-_arguments \
-  '(-v --version)'{-v,--version}'[show version]' \
-  '(-h --help)'{-h,--help}'[show help]' \
-  '*:: :->subcmds' && return 0
-
-if (( CURRENT == 1 )); then
-  _describe -t commands "gem subcommand" _1st_arguments
-  return
-fi
-
-case "$words[1]" in
-  build)
-    _files -g "*.gemspec"
-    ;;
-  install)
-    _files ;;
-  list)
-      if [[ "$state" == forms ]]; then
-        _gem_installed
-        _requested installed_gems expl 'installed gems' compadd -a installed_gems
-      fi ;;
-  uninstall|update)
-    _gem_installed
-    _wanted installed_gems expl 'installed gems' compadd -a installed_gems ;;
-esac