CR: continue to delete session when receiving an EndSession

// FREEBIE

src/Devices/OWSRecordTranscriptJob.m

@@ -47,7 +47,7 @@ NS_ASSUME_NONNULL_BEGIN
 
     if (transcript.isEndSessionMessage) {
         DDLogInfo(@"%@ EndSession was sent to recipient: %@.", self.tag, transcript.recipientId);
-        [self.storageManager archiveAllSessionsForContact:transcript.recipientId];
+        [self.storageManager deleteAllSessionsForContact:transcript.recipientId];
         [[[TSInfoMessage alloc] initWithTimestamp:transcript.timestamp
                                          inThread:transcript.thread
                                       messageType:TSInfoMessageTypeSessionDidEnd] save];

src/Messages/TSMessagesManager.m

@@ -708,7 +708,7 @@ NS_ASSUME_NONNULL_BEGIN
     }];
 
     dispatch_async([OWSDispatch sessionStoreQueue], ^{
-        [[TSStorageManager sharedManager] archiveAllSessionsForContact:endSessionEnvelope.source];
+        [[TSStorageManager sharedManager] deleteAllSessionsForContact:endSessionEnvelope.source];
     });
 }