Revert "[vm] Use multiple entrypoints to remove unnecessary checks on statically-typed closure calls."

This reverts commit 19126e861e9c5f26f3f676fc182f09166c0f86f3.

Reason for revert: Breaks several bots.

Original change's description:
> [vm] Use multiple entrypoints to remove unnecessary checks on statically-typed closure calls.
> 
> Test Plan:
> 
> Behavioral correctness should be ensured by existing tests. Tests in vm/dart/entrypoints
> ensure that the unchecked entrypoint is used in cases where the optimization should trigger.
> 
> Bug: https://github.com/dart-lang/sdk/issues/31798
> 
> Change-Id: Id25ecba86e20c22f0678c12986ad620db312ddaa
> Cq-Include-Trybots: luci.dart.try:vm-kernel-win-release-x64-try,vm-kernel-optcounter-threshold-linux-release-x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-linux-release-simarm-try,vm-kernel-precomp-linux-release-simarm64-try,vm-kernel-precomp-linux-release-x64-try,vm-kernel-precomp-win-release-x64-try
> Reviewed-on: https://dart-review.googlesource.com/69743
> Commit-Queue: Samir Jindel <sjindel@google.com>
> Reviewed-by: Vyacheslav Egorov <vegorov@google.com>

TBR=vegorov@google.com,sjindel@google.com

Change-Id: Ia33e9d141827d3c990c65d839333443c224dc85d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: https://github.com/dart-lang/sdk/issues/31798
Cq-Include-Trybots: luci.dart.try:vm-kernel-win-release-x64-try, vm-kernel-optcounter-threshold-linux-release-x64-try, vm-kernel-precomp-linux-debug-x64-try, vm-kernel-precomp-linux-release-simarm-try, vm-kernel-precomp-linux-release-simarm64-try, vm-kernel-precomp-linux-release-x64-try, vm-kernel-precomp-win-release-x64-try
Reviewed-on: https://dart-review.googlesource.com/70920
Reviewed-by: Samir Jindel <sjindel@google.com>
Commit-Queue: Samir Jindel <sjindel@google.com>