Automatic merge from submit-queue (batch tested with PRs 50029, 48517, 49739, 49866, 49782)

Pod affinity test clean up as AffinitInAnnotation is removed.

**What this PR does / why we need it**:
These tests are already covered under "empty topologyKey" pod affinity test cases.
These test cases were added only to test the scenario when the AffinitInAnnotation
feature was disabled. Since AffinitInAnnotation is removed now, these test cases are
no longer needed as they are duplicate now.


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

**Special notes for your reviewer**:

**Release note**:

```release-note
```

@kubernetes/sig-scheduling-misc  @bsalamat