Remove Build.VERSION.SDK* appcompat overrides

Preliminary testing shows that dependent reads do not impact app compat
behavior as it relates to rooted device detection on DF devices. Remove
the associated zygote override hooks for now, avoiding issues with
downstream code optimizations related to `Build.VERSION.*` field reads.

Bug: 423534968
Bug: 422787308
Test: manual QA for ~100 target app compat apps
Flag: EXEMPT bugfix for DF-specific app compat behavior
Change-Id: Ib962dbfd1f4c603dabcf49608c26e2853cefcfc0