Removing k8s contrib file

[techknowlogick]

We now have a helm chart that users should use instead

[codecov-commenter]

Codecov Report

Merging #12761 into master will decrease coverage by 0.00%.
The diff coverage is 37.96%.

@@            Coverage Diff             @@
##           master   #12761      +/-   ##
==========================================
- Coverage   43.30%   43.30%   -0.01%     
==========================================
  Files         648      647       -1     
  Lines       71765    71799      +34     
==========================================
+ Hits        31077    31091      +14     
- Misses      35657    35672      +15     
- Partials     5031     5036       +5     

Impacted Files	Coverage Δ
modules/indexer/code/elastic_search.go	0.00% <0.00%> (ø)
modules/indexer/code/indexer.go	35.22% <36.47%> (-0.95%)	⬇️
modules/queue/queue.go	32.25% <47.61%> (+7.86%)	⬆️
modules/charset/charset.go	68.53% <0.00%> (-4.50%)	⬇️
modules/log/event.go	57.54% <0.00%> (-1.89%)	⬇️
modules/git/repo.go	49.74% <0.00%> (-0.51%)	⬇️
cmd/dump.go	1.03% <0.00%> (-0.02%)	⬇️
models/issue_comment.go	53.90% <0.00%> (+0.15%)	⬆️
models/models.go	57.94% <0.00%> (+0.50%)	⬆️
models/error.go	35.32% <0.00%> (+0.51%)	⬆️
... and 5 more

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