Remove @emails from non-generated files (91/n)
Remove @emails from non-generated files (91/n)

Summary:
Context - [[quip](https://fb.quip.com/1T2uAglapSkF)]

We are updating the oncall annotation format of all javascript files from  `emails oncall+my_oncall_shortname` to `oncall my_oncall_shortname`.

NOTE: There are other linter errors in some of these files that have not been introduced by this change, they are not being fixed here since they are non-trivial fixes (eg. moving a file to a different path).

To ensure we don't break anything, we are making this update with the following steps:
1. Add 'oncall' annotation format to JSCodegenModule and its generated files
2. Add new linter rule to add the annotation to existing non-codegen files
3. Add the new annotation to existing non-codegen files - D37541172
4. Update www oncall extraction logic and VS Code templates to use the new format - D37862548
5. Remove 'emails' annotation from JSCodegenModule and its generated files - D37963776
6. **(This diff)** Remove old annotation format from existing non-codegen files
7. Consolidate linters rule to ask user to add new annotation to new files

drop-conflicts
ignore-nocommit

Differential Revision: D38292971

fbshipit-source-id: 716de2affb520ae5e33aa9e1a051499c272bcc88

facebook/draft-js