[Bug] remove required

[John-Lin]

No description provided.

[codecov-io]

Codecov Report

Merging #231 into develop will increase coverage by 0.05%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop     #231      +/-   ##
===========================================
+ Coverage    78.58%   78.63%   +0.05%     
===========================================
  Files           50       50              
  Lines         2484     2523      +39     
===========================================
+ Hits          1952     1984      +32     
- Misses         410      417       +7     
  Partials       122      122

Impacted Files	Coverage Δ
src/prometheuscontroller/controller.go	86.83% <0%> (-0.39%)	⬇️

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