Delete edited trigger from release workflow

[HansRobo]

Description

Abstract

When merged pull-request is edited, the release workflow executed wrongly.
It can be avoided in operation, but the possibility of human error remains, so I remove the trigger in this pull-request.

Background

N/A

Details

N/A

References

The releases that published wrongly

• https://github.com/tier4/scenario_simulator_v2/releases/tag/1.7.0
• https://github.com/tier4/scenario_simulator_v2/releases/tag/1.6.0

Destructive Changes

N/A

Known Limitations

N/A

[github-actions]

Checklist for reviewers ☑️

All references to "You" in the following text refer to the code reviewer.

• Is this pull request written in a way that is easy to read from a third-party perspective?
• Is there sufficient information (background, purpose, specification, algorithm description, list of disruptive changes, and migration guide) in the description of this pull request?
• If this pull request contains a destructive change, does this pull request contain the migration guide?
• Labels of this pull request are valid?
• All unit tests/integration tests are included in this pull request? If you think adding test cases is unnecessary, please describe why and cross out this line.
• The documentation for this pull request is enough? If you think adding documents for this pull request is unnecessary, please describe why and cross out this line.