[Installer] Remove Migrator

CHANGELOG.md

@@ -8,7 +8,9 @@ To install release candidates run `[sudo] gem install cocoapods --pre`
 
 ##### Enhancements
 
-* None.  
+* Remove references to the pre-1.0 Migrator.  
+  [Danielle Tomlinson](https://github.com/dantoml)
+  [#5635](https://github.com/CocoaPods/CocoaPods/pull/5635)
 
 ##### Bug Fixes
 

lib/cocoapods/installer.rb

@@ -34,7 +34,6 @@ module Pod
     autoload :PostInstallHooksContext,    'cocoapods/installer/post_install_hooks_context'
     autoload :PreInstallHooksContext,     'cocoapods/installer/pre_install_hooks_context'
     autoload :SourceProviderHooksContext, 'cocoapods/installer/source_provider_hooks_context'
-    autoload :Migrator,                   'cocoapods/installer/migrator'
     autoload :PodfileValidator,           'cocoapods/installer/podfile_validator'
     autoload :PodSourceInstaller,         'cocoapods/installer/pod_source_installer'
     autoload :PodSourcePreparer,          'cocoapods/installer/pod_source_preparer'
@@ -133,7 +132,6 @@ module Pod
         deintegrate_if_different_major_version
         sandbox.prepare
         ensure_plugins_are_installed!
-        Migrator.migrate(sandbox)
         run_plugins_pre_install_hooks
       end
     end

lib/cocoapods/installer/migrator.rb

-require 'fileutils'
-
-module Pod
-  class Installer
-    # Migrates installations performed by previous versions of CocoaPods.
-    #
-    class Migrator
-      class << self
-        # Performs the migration.
-        #
-        # @param  [Sandbox] sandbox
-        #         The sandbox which should be migrated.
-        #
-        def migrate(sandbox)
-          return unless sandbox.manifest
-        end
-
-        # @!group Migration Steps
-
-        # @!group Private helpers
-
-        # Check whether a migration is required
-        #
-        # @param [#to_s] target_version
-        #        See Version#new.
-        #
-        # @param [Sandbox] sandbox
-        #        The sandbox
-        #
-        # @return [void]
-        #
-        def installation_minor?(target_version, sandbox)
-          sandbox.manifest.cocoapods_version < Version.new(target_version)
-        end
-
-        # Makes a path creating any intermediate directory and printing an UI
-        # message.
-        #
-        # @path [#to_s] path
-        #       The path.
-        #
-        # @return [void]
-        #
-        def make_path(path)
-          return if path.exist?
-          UI.message "- Making path #{UI.path(path)}" do
-            path.mkpath
-          end
-        end
-
-        # Moves a path to another one printing an UI message.
-        #
-        # @path [#to_s] source
-        #       The path to move.
-        #
-        # @path [#to_s] destination
-        #       The destination path.
-        #
-        # @return [void]
-        #
-        def move(source, destination)
-          return unless source.exist?
-          make_path(destination.dirname)
-          UI.message "- Moving #{UI.path(source)} to #{UI.path(destination)}" do
-            FileUtils.mv(source.to_s, destination.to_s)
-          end
-        end
-
-        # Deletes a path, including non empty directories, printing an UI
-        # message.
-        #
-        # @path [#to_s] path
-        #       The path.
-        #
-        # @return [void]
-        #
-        def delete(path)
-          return unless path.exist?
-          UI.message "- Deleting #{UI.path(path)}" do
-            FileUtils.rm_rf(path)
-          end
-        end
-      end
-    end
-  end
-end

spec/unit/installer/migrator_spec.rb

-require File.expand_path('../../../spec_helper', __FILE__)
-
-module Pod
-  describe Installer::Migrator do
-  end
-end