chore: remove some bot config options (#17506)

.github/config.yml

@@ -1,13 +1,3 @@
-# Configuration for new-issue-welcome - https://github.com/behaviorbot/new-issue-welcome
-
-# Comment to be posted to on first time issues
-newIssueWelcomeComment: |
-  👋 Thanks for opening your first issue here! If you're reporting a 🐞 bug, please make sure you include steps to reproduce it. We get a lot of issues on this repo, so please be patient and we will get back to you as soon as we can.
-
-  To help make it easier for us to investigate your issue, please follow the [contributing guidelines](https://github.com/electron/electron/blob/master/CONTRIBUTING.md).
-
-# Configuration for new-pr-welcome - https://github.com/behaviorbot/new-pr-welcome
-
 # Comment to be posted to on PRs from first time contributors in your repository
 newPRWelcomeComment: |
   💖 Thanks for opening this pull request! 💖
@@ -36,11 +26,6 @@ newPRWelcomeComment: |
 firstPRMergeComment: >
   Congrats on merging your first pull request! 🎉🎉🎉
 
-# Configuration for trop - https://github.com/electron/trop
-
-watchedProject:
-  name: Backports
-
 # Users authorized to run manual trop backports
 authorizedUsers:
   - alexeykuzmin