Revert "[cfe/ffi] Improve FFI call mismatched types compile errors"

This reverts commit 206fdf148ca3eb80d9345e64710a162c1a64db13.

Reason for revert: Flutter issues are caught by this CL, preventing
Flutter from building.
https://github.com/flutter/flutter/issues/108309

Original change's description:
> [cfe/ffi] Improve FFI call mismatched types compile errors
>
> This CL fixes two issues.
>
> 1. `FfiNative`s now check the Dart and native type for compatiblity.
> 2. Both `FfiNative`, `asFunction`, and `lookupFunction` check the type
>    correspondence between native and Dart type with a subtype check of
>    the expected Dart type and the provided Dart type. For functions,
>    any return type is a subtype of a void type. This is fine for Dart,
>    but not for native calls. This CL manually checks the return type
>    for void.
>
> This CL does not fix the inconsistency between `asFunction` and
> `FfiNative` with regard to allowing more strict return types than
> `Object` for `Handle`s
> Issue: https://github.com/dart-lang/sdk/issues/49518
>
> Analyzer fixes in follow up CL.
>
> TEST=tests/ffi/vmspecific_static_checks_ffinative_test.dart
>
> Closes: https://github.com/dart-lang/sdk/issues/49471
> Change-Id: Ibc7bd6a1a0db59cc5fa5d755d76999fd7e9a06a4
> Cq-Include-Trybots: luci.dart.try:analyzer-linux-release-try,analyzer-mac-release-try,vm-ffi-android-debug-arm-try,vm-ffi-android-debug-arm64c-try
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/252601
> Reviewed-by: Martin Kustermann <kustermann@google.com>
> Commit-Queue: Daco Harkes <dacoharkes@google.com>

TBR=kustermann@google.com,dacoharkes@google.com

Change-Id: Id82b129d491adcc94cdd685a0a0f6a43248c71f2
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Issue: https://github.com/dart-lang/sdk/issues/49518
Cq-Include-Trybots: luci.dart.try:analyzer-linux-release-try,analyzer-mac-release-try,vm-ffi-android-debug-arm-try,vm-ffi-android-debug-arm64c-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/252662
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Commit-Queue: Daco Harkes <dacoharkes@google.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>