Automatic merge from submit-queue (batch tested with PRs 49129, 50436, 50417, 50553, 47587)

Fix Type Taint comment

**What this PR does / why we need it**:
remvoe redundant words in Type `Taint`.

**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**:
/assign @k82cn 

**Release note**:

```release-note
None
```