Automatic merge from submit-queue (batch tested with PRs 49055, 49128, 49132, 49134, 49110)

Remove affinity annotations leftover

**What this PR does / why we need it**:
This is a further cleanup for affinity annotations, following #47869.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
ref: #47869

**Special notes for your reviewer**:
- I remove the commented test cases and just leave TODOs instead. I think converting these untestable test cases for now is not necessary. We can add new test cases in future.
- I remove the e2e test case `validates that embedding the JSON PodAffinity and PodAntiAffinity setting as a string in the annotation value work` because we have a test case `validates that InterPod Affinity and AntiAffinity is respected if matching` to test the same thing.

/cc @aveshagarwal @bsalamat  @gyliu513 @k82cn @timothysc 

**Release note**:

```release-note
NONE
```