Remove redundant release step, it has been automated by try.kotlinlang.org team

Author: qwwdfsad

RELEASE.md

@@ -64,18 +64,14 @@ To release new `<version>` of `kotlinx-coroutines`:
 
 5. Announce new release in [Slack](https://kotlinlang.slack.com)   
 
-6. Create a ticket to update coroutines version on [try.kotlinlang.org](try.kotlinlang.org).
-   * Use [KT-30870](https://youtrack.jetbrains.com/issue/KT-30870) as a template
-   * This step should be skipped for eap versions that are not merged to `master`
-
-7. Switch into `develop` branch:<br>
+6. Switch into `develop` branch:<br>
    `git checkout develop`
 
-8. Fetch the latest `master`:<br>
+7. Fetch the latest `master`:<br>
    `git fetch` 
 
-9. Merge release from `master`:<br>
+8. Merge release from `master`:<br>
    `git merge origin/master`
 
-0. Push updates to `develop`:<br>
+9. Push updates to `develop`:<br>
    `git push`