[#112] Do not display "You are in this timezone"

[dcastro]

Description

Problem: We received some feedback that showing "You are in this timezone" in ephemeral messages isn't very useful. It would be better to just display the converted time, like we do for all other ephemeral messages, for consitency.

Solution: display the converted time.

Related issue(s)

Fixed #112

:white_check_mark: Checklist for your Pull Request

Related changes (conditional)

• Tests

  • [x] If I added new functionality, I added tests covering it.
  • [x] If I fixed a bug, I added a regression test to prevent the bug from silently reappearing again.

• Documentation

  • [x] I checked whether I should update the docs and did so if necessary:
  • README
  • Haddock

Stylistic guide (mandatory)

• [x] My commits comply with the policy used in Serokell.
• [x] My code complies with the style guide.

✓ Release Checklist

• [ ] I updated the version number in package.yaml.
• [ ] (After merging) I created a new entry in the releases page, with a summary of all user-facing changes.
  • I made sure a tag was created using the format vX.Y