Clean up FEATURE_REQUESTS
Clean up FEATURE_REQUESTS

We support the features which are being removed from the file.

llooker/aws-sdk-ruby,llooker/aws-sdk-ruby,hamadata/aws-sdk-ruby,hamadata/aws-sdk-ruby,cjyclaire/aws-sdk-ruby,llooker/aws-sdk-ruby,cjyclaire/aws-sdk-ruby,cjyclaire/aws-sdk-ruby,takeyuweb/aws-sdk-ruby,aws/aws-sdk-ruby,hamadata/aws-sdk-ruby,takeyuweb/aws-sdk-ruby,takeyuweb/aws-sdk-ruby,aws/aws-sdk-ruby,aws/aws-sdk-ruby