chore(*): remove old release workflow

[lobkovilya]

Signed-off-by: Ilya Lobkov ilya.lobkov@konghq.com

Checklist prior to review

• Link to docs PR or issue --
• Link to UI issue or PR --
• Is the issue worked on linked? --
• The PR does not hardcode values that might break projects that depend on kuma (e.g. "kumahq" as a image registry) --
• The PR will work for both Linux and Windows, system specific functions like syscall.Mkfifo have equivalent implementation on the other OS --
• Unit Tests --
• E2E Tests --
• Manual Universal Tests --
• Manual Kubernetes Tests --
• Do you need to update UPGRADE.md? --
• Does it need to be backported according to the backporting policy? --

Changelog: chore(.github): remove old release workflow

[codecov-commenter]

Codecov Report

Merging #4836 (1327fc9) into master (a856af7) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #4836   +/-   ##
=======================================
  Coverage   46.47%   46.47%           
=======================================
  Files         690      690           
  Lines       47069    47069           
=======================================
  Hits        21876    21876           
  Misses      23270    23270           
  Partials     1923     1923           

Impacted Files	Coverage Δ
pkg/core/resources/manager/cache.go	85.71% <0.00%> (ø)

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