Enable SCHEDULED_FOR_REMOVAL_API_USAGES in the verifier

This should be enforceable after the following land:
- #25
- #28
- #26

Author: jwren

third_party/build.gradle.kts

@@ -46,7 +46,7 @@ intellijPlatform {
             VerifyPluginTask.FailureLevel.COMPATIBILITY_WARNINGS,
             VerifyPluginTask.FailureLevel.COMPATIBILITY_PROBLEMS,
             //            VerifyPluginTask.FailureLevel.DEPRECATED_API_USAGES,
-            //            VerifyPluginTask.FailureLevel.SCHEDULED_FOR_REMOVAL_API_USAGES,
+            VerifyPluginTask.FailureLevel.SCHEDULED_FOR_REMOVAL_API_USAGES,
             //            VerifyPluginTask.FailureLevel.EXPERIMENTAL_API_USAGES,
             //            VerifyPluginTask.FailureLevel.INTERNAL_API_USAGES,
             VerifyPluginTask.FailureLevel.OVERRIDE_ONLY_API_USAGES,