Remove Playlists Test from Expectations File

CTS wasn't running the playlists test, because it was
blacklisted in the test expectations file.

Change-Id: Ib0a62c913ba730c4df3b60c049e5ef97a68b6da0
diff --git a/tests/expectations/knownfailures-3.0_r1.txt b/tests/expectations/knownfailures-3.0_r1.txt
index a13d081..76cd2c6 100644
--- a/tests/expectations/knownfailures-3.0_r1.txt
+++ b/tests/expectations/knownfailures-3.0_r1.txt
@@ -13,7 +13,6 @@
   description: "Need investigation.",
   names: [
     "android.provider.cts.Contacts_PeopleTest#testAddToGroup",
-    "android.provider.cts.MediaStore_Audio_Playlists_MembersTest",
     "android.webkit.cts.WebViewTest#testRequestImageRef",
     "tests.api.java.util.CalendarTest#test_getInstance"
   ]