Remove bundle-audit, it is not updated frequently enough

.travis.yml

@@ -61,5 +61,4 @@ install:
   - bash -c "if [ '$RAILS_MASTER' == '0' ]; then bundle install --without development --deployment --retry=3 --jobs=3; fi"
 
 script:
-  - bundle exec bundle-audit check --update
   - bash -c "if [ '$QUNIT_RUN' == '0' ]; then bundle exec rspec && bundle exec rake plugin:spec; else bundle exec rake qunit:test['200000']; fi"

Gemfile

@@ -140,7 +140,6 @@ group :test, :development do
   gem 'spork-rails'
   gem 'pry-nav'
   gem 'byebug', require: ENV['RM_INFO'].nil?
-  gem "bundler-audit", require: false
 end
 
 group :development do

Gemfile.lock

@@ -68,9 +68,6 @@ GEM
     bullet (5.4.2)
       activesupport (>= 3.0.0)
       uniform_notifier (~> 1.10.0)
-    bundler-audit (0.5.0)
-      bundler (~> 1.2)
-      thor (~> 0.18)
     byebug (9.0.6)
     certified (1.0.0)
     coderay (1.1.1)
@@ -405,7 +402,6 @@ DEPENDENCIES
   binding_of_caller
   bootsnap
   bullet
-  bundler-audit
   byebug
   certified
   discourse-qunit-rails

script/docker_test.rb

@@ -10,7 +10,6 @@ unless ENV['NO_UPDATE']
   checkout = ENV['COMMIT_HASH'] || "HEAD"
   run_or_fail("git checkout #{checkout}")
   run_or_fail("bundle")
-  run_or_fail("bundle-audit check --update")
 end
 
 run_or_fail("bundle exec rake docker:test")