This reverts commit a01de4a722d088055a7d84d8c691ddd7109edb34.
* Add missing generators feature flags * Generate files * Add generators flags * fixup! Add generators flags
These tests are derived from the following files within the Google V8 project: test/mjsunit/es6/generators-iteration.js test/mjsunit/es6/generators-objects.js test/mjsunit/es6/generators-runtime.js test/mjsunit/es6/generators-states.js