when the sub issue summit the duplicate emoji, then emoji panel can be removed.

[palytoxin]

• Gitea version (or commit ref): v1.11.0-dev-56-g28f60bb5c
• Git version: 2.23.0
• Operating system:macOS 10.15 (19A602)
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • Yes (provide example URL) https://try.gitea.io/palytoxin/repo1/issues/1#issuecomment-23696
  • No
  • Not relevant
• Log gist:

Description

...

Screenshots

I created PR [https://github.com//pull/8609](fix pr)

[zeripath]

Fixed by #8609