Does not need to disable GitHub webhooks since PRs are check out locally

app/views/import/github/status.html.haml

@@ -4,10 +4,6 @@
   %i.fa.fa-github
   Import projects from GitHub
 
-%p
-  %i.fa.fa-warning
-  To import GitHub pull requests, any pull request source branches that had been deleted are temporarily restored on GitHub. To prevent any connected CI services from being overloaded with dozens of irrelevant branches being created and deleted again, GitHub webhooks are temporarily disabled during the import process, but only if you have admin access to the GitHub repository.
-
 %p.light
   Select projects you want to import.
 %hr

lib/gitlab/github_import/hook_formatter.rb

-module Gitlab
-  module GithubImport
-    class HookFormatter
-      EVENTS = %w[* create delete pull_request push].freeze
-
-      attr_reader :raw
-
-      delegate :id, :name, :active, to: :raw
-
-      def initialize(raw)
-        @raw = raw
-      end
-
-      def config
-        raw.config.attrs
-      end
-
-      def valid?
-        (EVENTS & raw.events).any? && active
-      end
-    end
-  end
-end

lib/gitlab/github_import/importer.rb

@@ -66,8 +66,6 @@ module Gitlab
       end
 
       def import_pull_requests
-        disable_webhooks
-
         pull_requests = client.pull_requests(repo, state: :all, sort: :created, direction: :asc, per_page: 100)
         pull_requests = pull_requests.map { |raw| PullRequestFormatter.new(project, raw) }.select(&:valid?)
 
@@ -90,35 +88,6 @@ module Gitlab
         raise Projects::ImportService::Error, e.message
       ensure
         clean_up_restored_branches(branches_removed)
-        clean_up_disabled_webhooks
-      end
-
-      def disable_webhooks
-        update_webhooks(hooks, active: false)
-      end
-
-      def clean_up_disabled_webhooks
-        update_webhooks(hooks, active: true)
-      end
-
-      def update_webhooks(hooks, options)
-        hooks.each do |hook|
-          client.edit_hook(repo, hook.id, hook.name, hook.config, options)
-        end
-      end
-
-      def hooks
-        @hooks ||=
-          begin
-            client.hooks(repo).map { |raw| HookFormatter.new(raw) }.select(&:valid?)
-
-          # The GitHub Repository Webhooks API returns 404 for users
-          # without admin access to the repository when listing hooks.
-          # In this case we just want to return gracefully instead of
-          # spitting out an error and stop the import process.
-          rescue Octokit::NotFound
-            []
-          end
       end
 
       def restore_source_branches(branches)

spec/lib/gitlab/github_import/hook_formatter_spec.rb

-require 'spec_helper'
-
-describe Gitlab::GithubImport::HookFormatter, lib: true do
-  describe '#id' do
-    it 'returns raw id' do
-      raw = double(id: 100000)
-      formatter = described_class.new(raw)
-      expect(formatter.id).to eq 100000
-    end
-  end
-
-  describe '#name' do
-    it 'returns raw id' do
-      raw = double(name: 'web')
-      formatter = described_class.new(raw)
-      expect(formatter.name).to eq 'web'
-    end
-  end
-
-  describe '#config' do
-    it 'returns raw config.attrs' do
-      raw = double(config: double(attrs: { url: 'http://something.com/webhook' }))
-      formatter = described_class.new(raw)
-      expect(formatter.config).to eq({ url: 'http://something.com/webhook' })
-    end
-  end
-
-  describe '#valid?' do
-    it 'returns true when events contains the wildcard event' do
-      raw = double(events: ['*', 'commit_comment'], active: true)
-      formatter = described_class.new(raw)
-      expect(formatter.valid?).to eq true
-    end
-
-    it 'returns true when events contains the create event' do
-      raw = double(events: ['create', 'commit_comment'], active: true)
-      formatter = described_class.new(raw)
-      expect(formatter.valid?).to eq true
-    end
-
-    it 'returns true when events contains delete event' do
-      raw = double(events: ['delete', 'commit_comment'], active: true)
-      formatter = described_class.new(raw)
-      expect(formatter.valid?).to eq true
-    end
-
-    it 'returns true when events contains pull_request event' do
-      raw = double(events: ['pull_request', 'commit_comment'], active: true)
-      formatter = described_class.new(raw)
-      expect(formatter.valid?).to eq true
-    end
-
-    it 'returns false when events does not contains branch related events' do
-      raw = double(events: ['member', 'commit_comment'], active: true)
-      formatter = described_class.new(raw)
-      expect(formatter.valid?).to eq false
-    end
-
-    it 'returns false when hook is not active' do
-      raw = double(events: ['pull_request', 'commit_comment'], active: false)
-      formatter = described_class.new(raw)
-      expect(formatter.valid?).to eq false
-    end
-  end
-end