What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line:

/kind bug

/kind task

/kind feature

What does this PR do / why do we need it:

• file_need_clean: fixed warnings under Lixia and Zirui's name
• pclint_plus: fixed some warnings under Lixia's name

Which issue(s) this PR fixes:

Fixes ##I3V3CV:More CI warnings fix for master branch

Special notes for your reviewers: