Remove permissions monitor proxy form check semver hazards job (#4088)

## Motivation and Context
<!--- Why is this change required? What problem does it solve? -->
<!--- If it fixes an open issue, please link to the issue here -->
The permissions proxy made the the checkout step for the aws-sdk-rust
repo much slower.

Run with proxy took ~1 hour:
https://github.com/smithy-lang/smithy-rs/actions/runs/14340833647/job/40199555508
Run without took ~2 minutes:
https://github.com/smithy-lang/smithy-rs/actions/runs/14343880973/job/40209574197



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