Automatic merge from submit-queue (batch tested with PRs 52147, 54309). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Deviceplugin refactoring: cleanup some unnecessary functions
**What this PR does / why we need it**:
cleanup some of unnecessary functions of deviceplugin to improve code readability
**Which issue this PR fixes**
fixes#51993
Part1
**Special notes for your reviewer**:
Currently, it seems that func `IsResourceNameValid` is not used outside and could be changed to internal.
But as Renaud commented, it is designed for potential usage from users outside.
And I could not find a better position to place the func, except for file `utils.go`. So, shall we just retain the `utils.go` file, and maybe for possible expansion in the future?
/cc @jiayingz @RenaudWasTaken @vishh
**Release note**:
```release-note
NONE
```
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