onnxruntime

Remove remaining Windows ARM32 build jobs (#19840)

### Description
As a follow up of #19788, remove more remaining Windows ARM32 build
jobs.


### Motivation and Context
Our nuget packaging pipeline is failing because it could not find an
artifact for Win ARM32.
```
##[error]Artifact onnxruntime-training-win-arm was not found for build 421397.
```

Deprecation of Win ARM32 was announced by Windows team in January 2023.
We should follow it.