chore: remove unused useReactiveQuery hook from the codebase

[ggazzo]

https://rocketchat.atlassian.net/browse/ARCH-1679

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[dionisio-bot]

Looks like this PR is not ready to merge, because of the following issues:

• This PR is targeting the wrong base branch. It should target 7.9.0, but it targets 7.8.0

Please fix the issues and try again

If you have any trouble, please check the PR guidelines

[changeset-bot]

⚠️ No Changeset found

Latest commit: 561562d

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[github-actions]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.84%. Comparing base (10a2f6e) to head (561562d).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #36286      +/-   ##
===========================================
+ Coverage    64.81%   64.84%   +0.02%     
===========================================
  Files         3153     3153              
  Lines       104789   104787       -2     
  Branches     19957    19960       +3     
===========================================
+ Hits         67920    67945      +25     
+ Misses       34182    34154      -28     
- Partials      2687     2688       +1     

Flag	Coverage Δ
e2e	57.67% <100.00%> (+0.06%)	⬆️
unit	69.61% <ø> (+<0.01%)	⬆️

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[juliajforesti]

lgtm :)