Remove more tap pinning code.

This was deprecated and removed a while ago.

Library/Homebrew/cmd/tap-info.rb

@@ -69,7 +69,6 @@ module Homebrew
         puts unless i.zero?
         info = "#{tap}: "
         if tap.installed?
-          info += tap.pinned? ? "pinned" : "unpinned"
           info += ", private" if tap.private?
           info += if (contents = tap.contents).empty?
             ", no commands/casks/formulae"

Library/Homebrew/exceptions.rb

@@ -247,17 +247,6 @@ class TapAlreadyTappedError < RuntimeError
   end
 end
 
-class TapPinStatusError < RuntimeError
-  attr_reader :name, :pinned
-
-  def initialize(name, pinned)
-    @name = name
-    @pinned = pinned
-
-    super pinned ? "#{name} is already pinned." : "#{name} is already unpinned."
-  end
-end
-
 class OperationInProgressError < RuntimeError
   def initialize(name)
     message = <<~EOS

Library/Homebrew/tap.rb

@@ -500,26 +500,6 @@ class Tap
     @pinned = pinned_symlink_path.directory?
   end
 
-  # Pin this {Tap}.
-  def pin
-    raise TapUnavailableError, name unless installed?
-    raise TapPinStatusError.new(name, true) if pinned?
-
-    pinned_symlink_path.make_relative_symlink(path)
-    @pinned = true
-  end
-
-  # Unpin this {Tap}.
-  def unpin
-    raise TapUnavailableError, name unless installed?
-    raise TapPinStatusError.new(name, false) unless pinned?
-
-    pinned_symlink_path.delete
-    pinned_symlink_path.parent.rmdir_if_possible
-    pinned_symlink_path.parent.parent.rmdir_if_possible
-    @pinned = false
-  end
-
   def to_hash
     hash = {
       "name"          => name,
@@ -533,7 +513,6 @@ class Tap
       "cask_tokens"   => cask_tokens,
       "cask_files"    => cask_files.map(&:to_s),
       "command_files" => command_files.map(&:to_s),
-      "pinned"        => pinned?,
     }
 
     if installed?

Library/Homebrew/test/exceptions_spec.rb

@@ -117,20 +117,6 @@ describe TapAlreadyTappedError do
   its(:to_s) { is_expected.to eq("Tap foo already tapped.\n") }
 end
 
-describe TapPinStatusError do
-  context "pinned" do
-    subject { described_class.new("foo", true) }
-
-    its(:to_s) { is_expected.to eq("foo is already pinned.") }
-  end
-
-  context "unpinned" do
-    subject { described_class.new("foo", false) }
-
-    its(:to_s) { is_expected.to eq("foo is already unpinned.") }
-  end
-end
-
 describe BuildError do
   subject { described_class.new(formula, "badprg", %w[arg1 arg2], {}) }
 

Library/Homebrew/test/tap_spec.rb

@@ -304,16 +304,6 @@ describe Tap do
     (HOMEBREW_PREFIX/"share").rmtree if (HOMEBREW_PREFIX/"share").exist?
   end
 
-  specify "#pin and #unpin" do
-    expect(subject).not_to be_pinned
-    expect { subject.unpin }.to raise_error(TapPinStatusError)
-    subject.pin
-    expect(subject).to be_pinned
-    expect { subject.pin }.to raise_error(TapPinStatusError)
-    subject.unpin
-    expect(subject).not_to be_pinned
-  end
-
   specify "#config" do
     setup_git_repo
 

completions/bash/brew

@@ -876,7 +876,6 @@ _brew() {
     switch)                     _brew_switch ;;
     tap)                        _brew_tap ;;
     tap-info)                   _brew_tap_info ;;
-    tap-pin)                    __brew_complete_tapped ;;
     tap-new)                    _brew_tap_new ;;
     tap-unpin)                  _brew_tap_unpin ;;
     test)                       __brew_complete_installed ;;

completions/fish/brew.fish

@@ -532,14 +532,6 @@ __fish_brew_complete_arg 'tap-info; and not __fish_brew_opt --installed' -l inst
 __fish_brew_complete_arg 'tap-info; and not __fish_brew_opt --json=v1'   -l json=v1   -d "Format output in JSON format"
 
 
-__fish_brew_complete_cmd 'tap-pin' "Prioritize tap's formulae over core"
-__fish_brew_complete_arg 'tap-pin' -a '(__fish_brew_suggest_taps_installed)'
-
-
-__fish_brew_complete_cmd 'tap-unpin' "Don't prioritize tap's formulae over core anymore"
-__fish_brew_complete_arg 'tap-unpin' -a '(__fish_brew_suggest_taps_pinned)'
-
-
 __fish_brew_complete_cmd 'uninstall' "Uninstall formula"
 # FIXME: uninstall has a weird alias uninstal (with single l), probably it should also be supported
 __fish_brew_complete_arg 'uninstall remove rm' -a '(__fish_brew_suggest_formulae_installed)'

completions/zsh/_brew

@@ -123,8 +123,6 @@ __brew_common_commands() {
     'switch:switch between different versions of a formula'
     'tap:tap a new formula repository from GitHub, or list existing taps'
     'tap-info:information about a tap'
-    'tap-pin:pin a tap'
-    'tap-unpin:unpin a tap'
     'test-bot:test a formula and build a bottle'
     'uninstall:uninstall a formula'
     'unlink:unlink a formula'
@@ -679,11 +677,6 @@ _brew_tap_info() {
     '(--installed)*:taps:__brew_installed_taps'
 }
 
-# brew tap-pin tap:
-_brew_tap_pin() {
-  __brew_installed_taps
-}
-
 # brew tap_readme [-v] name:
 # TODO missing argument docs (verbose perhaps)
 _brew_tap_readme() {
@@ -692,11 +685,6 @@ _brew_tap_readme() {
     ':name: '
 }
 
-# brew tap-unpin tap:
-_brew_tap_unpin() {
-  __brew_pinned_taps
-}
-
 # brew test [--devel|--HEAD] [--debug] [--keep-tmp] formulae:
 _brew_test() {
   _arguments \