Remove HBoolify

HBoolify was used in Dart1 unchecked mode.

Change-Id: I1cdbff515fc7446c67fc255bb9599dee79dfd242
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/103569
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Commit-Queue: Stephen Adams <sra@google.com>

https://dart.googlesource.com/sdk/+/cc2fac57f31442fc9a66960d51bc049d80a6e177
diff --git a/commits.json b/commits.json
index 3cce63e..41d2d7d 100644
--- a/commits.json
+++ b/commits.json
@@ -1,5 +1,5 @@
 {
   "external/github.com/flutter/engine":"ee6a9c40492e54a0ae160293900d9e3b42b725d7",
   "external/github.com/flutter/flutter":"552e74770da213b4d81a19bcbc525e1253c88753",
-  "sdk":"dfbc3923e486252f14925b2288f2f88fe439c29e"
+  "sdk":"cc2fac57f31442fc9a66960d51bc049d80a6e177"
 }
\ No newline at end of file