SdkGenerator/Server/EmailSenderG.hs -> genNewEmailSenderApi -> remove new from name?

[Martinsos]

Following up on this comment #1701 (comment) .

Actually this is not the only SDK generator function that has new in the name, I just realized @infomiho added new prefix to most of those that he refactored -> @infomiho was the idea to remove this later?

[infomiho]

I agree that we should remove it 👍

It was a transient name that helped me to differentiate the old from the new stuff. We agreed we'll refactor the exports anyways, so could handle this then as well.