Remove integration test from Rakefile as current code cannot run with latest rules_ios

Author: gyfelton

Rakefile

@@ -40,7 +40,8 @@ namespace :spec do
 end
 
 desc 'Run all specs'
-task spec: %w[spec:unit spec:integration]
+# TODO: add back integration once we can fix its dep on rules_ios
+task spec: %w[spec:unit]
 
 RuboCop::RakeTask.new(:rubocop)