Do not include release notes in chat exports.

app/src/androidTest/java/org/thoughtcrime/securesms/backup/v2/ArchiveImportExportTests.kt

@@ -66,11 +66,6 @@ class ArchiveImportExportTests {
     runTests { it.matches(Regex("^chat_%d%d.binproto$")) }
   }
 
-//  @Test
-  fun chatReleaseNotes() {
-    runTests { it.startsWith("chat_release_notes_") }
-  }
-
 //  @Test
   fun chatFolders() {
     runTests { it.startsWith("chat_folder_") }