[Cron] Delete workers for all inactive challenges

[Ram81]

Description

This PR -

• [x] Delete workers for all inactive challenges and not just unapproved challenges.

[codecov-commenter]

Codecov Report

Merging #3755 (29f86c9) into master (96968d6) will decrease coverage by 1.35%. The diff coverage is 34.75%.

@@            Coverage Diff             @@
##           master    #3755      +/-   ##
==========================================
- Coverage   72.93%   71.57%   -1.36%     
==========================================
  Files          83       20      -63     
  Lines        5368     3240    -2128     
==========================================
- Hits         3915     2319    -1596     
+ Misses       1453      921     -532     

Impacted Files	Coverage Δ
frontend/src/js/controllers/authCtrl.js	53.91% <6.38%> (-12.95%)	:arrow_down:
frontend/src/js/controllers/permissionCtrl.js	36.36% <22.22%> (-63.64%)	:arrow_down:
frontend/src/js/controllers/challengeCtrl.js	63.54% <31.97%> (-10.15%)	:arrow_down:
frontend/src/js/controllers/updateProfileCtrl.js	82.55% <44.44%> (-10.30%)	:arrow_down:
frontend/src/js/controllers/profileCtrl.js	80.89% <45.45%> (-11.96%)	:arrow_down:
...ntend/src/js/controllers/challengeHostTeamsCtrl.js	70.50% <66.66%> (-1.18%)	:arrow_down:
frontend/src/js/controllers/teamsCtrl.js	71.17% <75.00%> (ø)
frontend/src/js/controllers/challengeListCtrl.js	95.74% <80.00%> (+1.06%)	:arrow_up:
frontend/src/js/controllers/ChallengeInviteCtrl.js	100.00% <100.00%> (ø)
frontend/src/js/controllers/SubmissionFilesCtrl.js	95.45% <100.00%> (ø)
... and 69 more

Impacted Files	Coverage Δ
frontend/src/js/controllers/authCtrl.js	53.91% <6.38%> (-12.95%)	:arrow_down:
frontend/src/js/controllers/permissionCtrl.js	36.36% <22.22%> (-63.64%)	:arrow_down:
frontend/src/js/controllers/challengeCtrl.js	63.54% <31.97%> (-10.15%)	:arrow_down:
frontend/src/js/controllers/updateProfileCtrl.js	82.55% <44.44%> (-10.30%)	:arrow_down:
frontend/src/js/controllers/profileCtrl.js	80.89% <45.45%> (-11.96%)	:arrow_down:
...ntend/src/js/controllers/challengeHostTeamsCtrl.js	70.50% <66.66%> (-1.18%)	:arrow_down:
frontend/src/js/controllers/teamsCtrl.js	71.17% <75.00%> (ø)
frontend/src/js/controllers/challengeListCtrl.js	95.74% <80.00%> (+1.06%)	:arrow_up:
frontend/src/js/controllers/ChallengeInviteCtrl.js	100.00% <100.00%> (ø)
frontend/src/js/controllers/SubmissionFilesCtrl.js	95.45% <100.00%> (ø)
... and 69 more

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