This reverts commit 70d87b8.

Reverts #48817
Initiated by: zanderso
This change reverts the following previous change:
Original Description:

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/clang-flutter-engine
Please CC [email protected],[email protected],[email protected] on the revert to ensure that a human
is aware of the problem.

To file a bug in Clang: https://bugs.fuchsia.dev/p/fuchsia/issues/list?q=component%3AToolchain
To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

…e#48817)

…139807)

flutter/engine@6a687be...e9e0ff0

2023-12-08 98614782+auto-submit[bot]@users.noreply.github.com Reverts "Roll Clang from 00396e6a1a0b to 725656bdd885" (flutter/engine#48832)
2023-12-08 [email protected] Roll Dart SDK from be8a95b6717d to 2c928cc12f94 (6 revisions) (flutter/engine#48818)
2023-12-08 [email protected] Roll Clang from 00396e6a1a0b to 725656bdd885 (flutter/engine#48817)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC [email protected],[email protected],[email protected] on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

I'm seeing post-submit runs of full clang_tidy taking about ~20-ish
minutes excluding queue time, so the premise of
flutter/flutter#139769 may be incorrect. In
that case, we should re-enable full clang_tidy in presubmit and observe
any impacts to queue time.

Context is that the clang autoroll became unblocked and landed a roll
that passed clang_tidy checks in presubmit, but then failed in post
submit: #48817