Revert "feat: Add support for Action Item Categories"

[palisadoes]

@meetulr

This needs to be reverted. You seem to have missed an edge case in your tests. They passed with the PR.

• https://github.com/PalisadoesFoundation/talawa-admin/actions/runs/7863549480/job/21454284769#step:6:1127

Reverts #1522

[github-actions]

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Codecov Report

Attention: 5 lines in your changes are missing coverage. Please review.

Comparison is base (655b6b3) 92.77% compared to head (de9745d) 96.65%.
Report is 176 commits behind head on develop.

Files	Patch %	Lines
src/components/OrgPostCard/OrgPostCard.tsx	69.23%	4 Missing ⚠️
src/components/OrgUpdate/OrgUpdate.tsx	93.75%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1575      +/-   ##
===========================================
+ Coverage    92.77%   96.65%   +3.88%     
===========================================
  Files          134      136       +2     
  Lines         3238     3587     +349     
  Branches       904     1101     +197     
===========================================
+ Hits          3004     3467     +463     
+ Misses         225      114     -111     
+ Partials         9        6       -3     

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