Refactor utility functions related to pointers

[shuheiktgw]

What does this PR do?

Most of the pointer-related utility functions have been deprecated due to the introduction of generics. In this PR, I've refactored the code and removed most of them.

Motivation

Cleaning up the codebase.

Additional Notes

N/A

Minimum Agent Versions

N/A

Describe your test plan

N/A

Checklist

• [x] PR has at least one valid label: bug, enhancement, refactoring, documentation, tooling, and/or dependencies
• [ ] PR has a milestone or the qa/skip-qa label

[codecov-commenter]

Codecov Report

:x: Patch coverage is 69.55224% with 102 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 49.30%. Comparing base (bd4ad0b) to head (002b257). :warning: Report is 284 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/controller/testutils/agent.go	0.00%	64 Missing :warning:
pkg/testutils/builder.go	89.89%	10 Missing :warning:
...adogagent/component/clusterchecksrunner/default.go	0.00%	4 Missing :warning:
pkg/constants/utils.go	0.00%	4 Missing :warning:
...troller/datadogagent/controller_reconcile_agent.go	0.00%	1 Missing and 1 partial :warning:
...ontroller/datadogagent/controller_reconcile_ccr.go	0.00%	0 Missing and 2 partials :warning:
...atadogagent/feature/kubernetesstatecore/feature.go	60.00%	1 Missing and 1 partial :warning:
...nternal/controller/datadogagent/override/global.go	66.66%	1 Missing and 1 partial :warning:
internal/controller/datadogagent/utils.go	0.00%	2 Missing :warning:
...ontroller/datadogagent/controller_reconcile_dca.go	0.00%	0 Missing and 1 partial :warning:
... and 9 more

:x: Your patch status has failed because the patch coverage (69.55%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1710      +/-   ##
==========================================
- Coverage   49.30%   49.30%   -0.01%     
==========================================
  Files         219      219              
  Lines       21298    21292       -6     
==========================================
- Hits        10501    10498       -3     
+ Misses      10250    10248       -2     
+ Partials      547      546       -1     

Flag	Coverage Δ
unittests	49.30% <69.55%> (-0.01%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...controller/datadogagent/component/agent/default.go	79.35% <100.00%> (ø)
...ler/datadogagent/component/clusteragent/default.go	96.89% <100.00%> (ø)
...nal/controller/datadogagent/feature/asm/feature.go	71.21% <100.00%> (ø)
...roller/datadogagent/feature/autoscaling/feature.go	72.91% <100.00%> (ø)
...ller/datadogagent/feature/clusterchecks/feature.go	62.04% <100.00%> (ø)
...al/controller/datadogagent/feature/cspm/feature.go	75.20% <100.00%> (ø)
...ntroller/datadogagent/feature/ebpfcheck/feature.go	83.60% <100.00%> (ø)
...er/datadogagent/feature/eventcollection/feature.go	62.31% <100.00%> (ø)
...er/datadogagent/feature/externalmetrics/feature.go	54.16% <100.00%> (ø)
...nal/controller/datadogagent/feature/gpu/feature.go	90.47% <100.00%> (ø)
... and 36 more

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[dd-octo-sts[bot]]

This pull request has been automatically marked as stale because it has not had activity in the past 15 days.

It will be closed in 30 days if no further activity occurs. If this pull request is still relevant, adding a comment or pushing new commits will keep it open. Also, you can always reopen the pull request if you missed the window.

Thank you for your contributions!

[dd-octo-sts[bot]]

This pull request has been automatically marked as stale because it has not had activity in the past 15 days.

It will be closed in 30 days if no further activity occurs. If this pull request is still relevant, adding a comment or pushing new commits will keep it open. Also, you can always reopen the pull request if you missed the window.

Thank you for your contributions!