Remove unnecessary !!

checkPersistedState now takes a RolesState?, remove the unnecessary !!.

Test: treehugger
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:2506bc4ce637e4c57403eb1d319ad9384ccf462d)
Merged-In: Id01e05991315688956d4124e3faf161b42bce642
Change-Id: Id01e05991315688956d4124e3faf161b42bce642
diff --git a/tests/apex/java/com/android/role/persistence/RolesPersistenceTest.kt b/tests/apex/java/com/android/role/persistence/RolesPersistenceTest.kt
index be821f3..d90ffad 100644
--- a/tests/apex/java/com/android/role/persistence/RolesPersistenceTest.kt
+++ b/tests/apex/java/com/android/role/persistence/RolesPersistenceTest.kt
@@ -91,7 +91,7 @@
             .writeText("<roles version=\"-1\"><role name=\"com.foo.bar\"><holder")
         val persistedState = persistence.readForUser(user)
 
-        checkPersistedState(persistedState!!)
+        checkPersistedState(persistedState)
     }
 
     @Test