fix: deprecated Stream method in pkg/ctrl/server/exec.go

[zhanluxianshen]

What problem does this PR solve?

Fix unused code and clean method in pkg/ctrl/server/exec.go

What's changed and how it works?

Related changes

• This change also requires further updates to the website (e.g. docs)
• This change also requires further updates to the UI interface

Cherry-pick to release branches (optional)

This PR should be cherry-picked to the following release branches:

• release-2.6
• release-2.5

Checklist

CHANGELOG

Must include at least one of them.

• I have updated the CHANGELOG.md
• I have labeled this PR with "no-need-update-changelog"

Tests

Must include at least one of them.

• Unit test
• E2E test
• Manual test

Side effects

• Breaking backward compatibility

DCO

If you find the DCO check fails, please run commands like below (Depends on the actual situations. For example, if the failed commit isn't the most recent) to fix it:

git commit --amend --signoff
git push --force

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 38.88%. Comparing base (12d4810) to head (8027273).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4380      +/-   ##
==========================================
+ Coverage   38.72%   38.88%   +0.15%     
==========================================
  Files         169      169              
  Lines       13953    13953              
==========================================
+ Hits         5403     5425      +22     
+ Misses       8102     8086      -16     
+ Partials      448      442       -6     

see 8 files with indirect coverage changes

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[g1eny0ung]

LGTM!

[chaotic-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: g1eny0ung

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[zhanluxianshen]

thanks