[BE]よくわからないリアクションに関するログが流れっぱなしなのを修正

[fruitriin]

What

消し忘れと思われるconsole.logを消します

Why

本番のログを無意味に流してしまうのを削減します

Additional info (optional)

Checklist

• Read the contribution guide
• Test working in a local environment
• (If needed) Add story of storybook
• (If needed) Update CHANGELOG.md
• (If possible) Add tests

[github-actions]

このPRによるapi.jsonの差分
差分はありません。
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 40.46%. Comparing base (363bdac) to head (0342ffc).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #15303      +/-   ##
===========================================
- Coverage    42.14%   40.46%   -1.68%     
===========================================
  Files         1572     1568       -4     
  Lines       204953   199141    -5812     
  Branches      4026     3955      -71     
===========================================
- Hits         86370    80591    -5779     
+ Misses      117979   117945      -34     
- Partials       604      605       +1     

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[mi-gh-maintainer]

Thank you 🙏

[fruitriin]

#14625 の一部が解決