chore: remove workerID tag

[cisse21]

Description

Remove workerID tag to reduce the number of Prometheus time series

Notion Ticket

Notion Link

Security

• The code changed/added as part of this pull request won't create any security issues with how the software is being used.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.16 ⚠️

Comparison is base (828f70d) 52.79% compared to head (a0977ca) 52.64%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3055      +/-   ##
==========================================
- Coverage   52.79%   52.64%   -0.16%     
==========================================
  Files         334      334              
  Lines       52202    52198       -4     
==========================================
- Hits        27562    27481      -81     
- Misses      23043    23121      +78     
+ Partials     1597     1596       -1     

Impacted Files	Coverage Δ
gateway/gateway.go	76.39% <100.00%> (-0.10%)	⬇️
processor/stash/stash.go	45.25% <0.00%> (-21.54%)	⬇️
router/manager/manager.go	96.70% <0.00%> (-3.30%)	⬇️
jobsdb/migration.go	76.28% <0.00%> (-1.29%)	⬇️
processor/processor.go	86.79% <0.00%> (-0.41%)	⬇️
jobsdb/backup.go	75.40% <0.00%> (-0.36%)	⬇️

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