[WIP] Address feedback on ROCM-20009: remove stale event-timing machinery and rename test

[Copilot]

After removing time-based assertions in #3950, validateStreamPrioritiesWithEvents retained event infrastructure that no longer served any purpose—the function only verified kernel output correctness. This PR cleans that up.

Motivation

validateStreamPrioritiesWithEvents and Unit_hipStreamCreateWithPriority_ValidateWithEvents were misleadingly named and contained dead code after the timing assertions were dropped. Events were still being created, recorded, and destroyed solely to produce an INFO-level log with no corresponding assertion.

Technical Details

• Removed all HIP event machinery: hipEventCreate, hipEventRecord (start/end), hipEventElapsedTime, hipEventSynchronize, hipEventDestroy
• Replaced hipEventSynchronize(event_end_##x) with hipStreamSynchronize(stream_##x) for correctness
• Renamed validateStreamPrioritiesWithEvents → verifyStreamPriorityKernelResults
• Renamed Unit_hipStreamCreateWithPriority_ValidateWithEvents → Unit_hipStreamCreateWithPriority_VerifyKernelResults
• Updated test description comment to reflect actual intent: launch kernels on priority streams, synchronize, verify output correctness
• Fixed typo: prioritiy → priority in comment

JIRA ID

Resolves ROCM-20009

Test Plan

Manual inspection of the updated test logic. Build and run Unit_hipStreamCreateWithPriority_VerifyKernelResults on a ROCm-enabled device.

Test Result

No behavioral change to test logic—only dead event-timing code removed and naming updated to match actual test intent.

Submission Checklist

• Look over the contributing guidelines at https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.

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