Revert "Migrate test_support_unittests to rtc_test_suite"

This reverts commit e72179b2a11594b6f7d9df68286bb56edf75b11b.

Reason for revert: Breaks roll into chromium: https://ci.chromium.org/ui/p/chromium/builders/try/win-libfuzzer-asan-rel/2662745/overview
Original change's description:
> Migrate test_support_unittests to rtc_test_suite
>
> Bug: webrtc:498394143
> Change-Id: Ibb9fec5792d7b08d6377a5c42a6ddbfbcafc6c05
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/474740
> Commit-Queue: Jeremy Leconte <jleconte@google.com>
> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
> Cr-Commit-Position: refs/heads/main@{#47897}

Bug: webrtc:498394143
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: Ic193b40a07bf3f4829f3274e1d8a4adfe2839051
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/478880
Bot-Commit: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#47905}