3c13e9f273
This code is no longer used now that the new runtime types are always enabled. Change-Id: I0c7d627199a10e023d5d1afa581812b360e9a0f0 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/344609 Reviewed-by: Mark Zhou <markzipan@google.com> Commit-Queue: Nicholas Shahan <nshahan@google.com>