HelloWorkflowFragmentAppTest is no longer suppressed.

It was choking on API 21 w/the old Leakcanary test rules, and we've stopped using those.

Fixes #582

Author: rjrjr

samples/hello-workflow-fragment/src/androidTest/java/com/squareup/sample/helloworkflowfragment/HelloWorkflowFragmentAppTest.kt

@@ -17,9 +17,6 @@ import org.junit.Test
 import org.junit.rules.RuleChain
 import org.junit.runner.RunWith
 
-// Life is too short to debug why LeakCanary breaks this on API 21
-// https://github.com/square/workflow-kotlin/issues/582
-@SdkSuppress(minSdkVersion = Build.VERSION_CODES.M)
 @RunWith(AndroidJUnit4::class)
 @OptIn(WorkflowUiExperimentalApi::class)
 class HelloWorkflowFragmentAppTest {