chore: Remove obsolete code after switching to Dev Workspace enabled

[tolusha]

Signed-off-by: Anatolii Bazko abazko@redhat.com

What does this PR do?

Remove obsolete code after switching to Dev Workspace enabled

Screenshot/screencast of this PR

N/A

What issues does this PR fix or reference?

eclipse-che/che#20982
eclipse-che/che#17012
eclipse-che/che#17090

How to test this PR?

N/A

PR Checklist

As the author of this Pull Request I made sure that:

• The Eclipse Contributor Agreement is valid
• Code produced is complete
• Code builds without errors
• Tests are covering the bugfix
• Custom resource definition file is up to date
• OLM bundles are up to date
• The repository devfile is up to date and works
• Sections What issues does this PR fix or reference and How to test this PR completed
• Relevant user documentation updated
• Relevant contributing documentation updated
• CI/CD changes implemented, documented and communicated

Reviewers

Reviewers, please comment how you tested the PR when approving it.

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: tolusha

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[tolusha]

ci/prow/v9-devworkspace-happy-path

[tolusha]

/retest

[tolusha]

/retest

[tolusha]

/retest

[tolusha]

/retest

[musienko-maxim]

/test v9-devworkspace-happy-path

[tolusha]

/retest

[musienko-maxim]

/test v9-devworkspace-happy-path

[tolusha]

/retest

[tolusha]

/retest

[tolusha]

/test v9-devworkspace-happy-path

[codecov]

Codecov Report

Merging #1291 (4ee944c) into main (228a335) will increase coverage by 3.55%.
The diff coverage is 55.55%.

@@            Coverage Diff             @@
##             main    #1291      +/-   ##
==========================================
+ Coverage   56.19%   59.75%   +3.55%     
==========================================
  Files          84       78       -6     
  Lines        7946     6353    -1593     
==========================================
- Hits         4465     3796     -669     
+ Misses       2995     2180     -815     
+ Partials      486      377     -109     

Impacted Files	Coverage Δ
controllers/che/checluster_controller.go	0.00% <ø> (-34.36%)	⬇️
controllers/che/checluster_validator.go	0.00% <0.00%> (ø)
pkg/deploy/consolelink/consolelink.go	71.73% <ø> (+4.39%)	⬆️
pkg/deploy/dev-workspace/dev_workspace.go	56.25% <ø> (+2.25%)	⬆️
.../identity-provider/identity_provider_reconciler.go	0.00% <0.00%> (-9.06%)	⬇️
...deploy/identity-provider/identity_provider_util.go	0.00% <ø> (ø)
pkg/deploy/postgres/postgres.go	32.65% <ø> (+12.17%)	⬆️
pkg/deploy/rbac/gateway_permissions.go	0.00% <0.00%> (ø)
pkg/deploy/server/default_values_reconciler.go	0.00% <ø> (-45.40%)	⬇️
pkg/deploy/server/server_util.go	64.28% <ø> (+5.46%)	⬆️
... and 26 more

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