Remove Google Analytics tracking code

I never look at the data from this and in any case I don't ask
permission to track people on the website, so it's long overdue for
removal.

.circleci/config.yml

@@ -50,7 +50,7 @@ jobs:
           steps:
             - run: bundle exec rake test:performance
             - run: MOCHA_GENERATE_DOCS=1 bundle install --gemfile=<< parameters.gemfile >>
-            - run: MOCHA_GENERATE_DOCS=1 GOOGLE_ANALYTICS_WEB_PROPERTY_ID=dummy rake yardoc
+            - run: MOCHA_GENERATE_DOCS=1 rake yardoc
   lint:
     docker:
       - image: ruby:2.6

.yardopts

@@ -1,5 +1,4 @@
 --output-dir docs
---template-path yard-templates
 --no-private
 lib/mocha/api.rb
 lib/mocha/hooks.rb

README.md

@@ -331,14 +331,12 @@ See this [list of contributors](https://github.com/freerange/mocha/graphs/contri
 * Commit & push to GitHub
 * Check CircleCI build is passing - https://app.circleci.com/pipelines/github/freerange/mocha
 
-* Sign in to Google Analytics - https://analytics.google.com/analytics/web/
-* Find the web property ID for floehopper (625523) > Mocha Documentation (UA-625523-7)
 * Generate documentation:
 
 ```bash
 $ MOCHA_GENERATE_DOCS=true bundle install
 
-$ MOCHA_GENERATE_DOCS=true GOOGLE_ANALYTICS_WEB_PROPERTY_ID=UA-625523-7 rake generate_docs
+$ MOCHA_GENERATE_DOCS=true rake generate_docs
 ```
 * Commit documentation & push to GitHub
 * Sign in to rubygems.org and find API key - https://rubygems.org/profile/edit

Rakefile

@@ -129,14 +129,8 @@ if ENV['MOCHA_GENERATE_DOCS']
     `rm -rf ./docs`
   end
 
-  task 'docs_environment' do
-    unless ENV['GOOGLE_ANALYTICS_WEB_PROPERTY_ID']
-      puts "\nWarning: GOOGLE_ANALYTICS_WEB_PROPERTY_ID was not defined\n\n"
-    end
-  end
-
   desc 'Generate documentation'
-  YARD::Rake::YardocTask.new('yardoc' => 'docs_environment') do |task|
+  YARD::Rake::YardocTask.new('yardoc') do |task|
     task.options = ['--title', "Mocha #{Mocha::VERSION}", '--fail-on-warning']
   end