Resolve some leftover TODOs

Session/Signal/ConversationView/ConversationViewController.m

@@ -1451,20 +1451,7 @@ typedef enum : NSUInteger {
 
 - (void)handleFailedDownloadTapForMessage:(TSMessage *)message
 {
-    OWSAssert(message);
-
-    // TODO TODO TODO
-    
-//    [self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
-//        [self.attachmentDownloads downloadAttachmentsForMessage:message
-//            transaction:transaction
-//            success:^(NSArray<TSAttachmentStream *> *attachmentStreams) {
-//                OWSLogInfo(@"Successfully redownloaded attachment in thread: %@", message.thread);
-//            }
-//            failure:^(NSError *error) {
-//                OWSLogWarn(@"Failed to redownload message with error: %@", error);
-//            }];
-//    }];
+    // Do nothing
 }
 
 - (void)handleUnsentMessageTap:(TSOutgoingMessage *)message
@@ -1481,7 +1468,9 @@ typedef enum : NSUInteger {
                                                                     [self remove:message];
                                                                 }];
     [actionSheet addAction:deleteMessageAction];
-    
+
+    // TODO TODO TODO
+
 //    UIAlertAction *resendMessageAction = [UIAlertAction
 //                actionWithTitle:NSLocalizedString(@"SEND_AGAIN_BUTTON", @"")
 //        accessibilityIdentifier:ACCESSIBILITY_IDENTIFIER_WITH_NAME(self, @"send_again")
@@ -1908,35 +1897,7 @@ typedef enum : NSUInteger {
                                  quotedReply:(OWSQuotedReplyModel *)quotedReply
     failedThumbnailDownloadAttachmentPointer:(TSAttachmentPointer *)attachmentPointer
 {
-    OWSAssertIsOnMainThread();
-    OWSAssertDebug(viewItem);
-    OWSAssertDebug(attachmentPointer);
-
-    TSMessage *message = (TSMessage *)viewItem.interaction;
-    if (![message isKindOfClass:[TSMessage class]]) {
-        OWSFailDebug(@"message had unexpected class: %@", message.class);
-        return;
-    }
-
-    // TODO TODO TODO
-    
-//    [self.uiDatabaseConnection asyncReadWithBlock:^(YapDatabaseReadTransaction *transaction) {
-//        [self.attachmentDownloads downloadAttachmentPointer:attachmentPointer
-//            success:^(NSArray<TSAttachmentStream *> *attachmentStreams) {
-//                OWSAssertDebug(attachmentStreams.count == 1);
-//                TSAttachmentStream *attachmentStream = attachmentStreams.firstObject;
-//                [LKStorage writeSyncWithBlock:^(YapDatabaseReadWriteTransaction *postSuccessTransaction) {
-//                    [message setQuotedMessageThumbnailAttachmentStream:attachmentStream];
-//                    [message saveWithTransaction:postSuccessTransaction];
-//                }];
-//            }
-//            failure:^(NSError *error) {
-//                OWSLogWarn(@"Failed to redownload thumbnail with error: %@", error);
-//                [LKStorage writeSyncWithBlock:^(YapDatabaseReadWriteTransaction *postSuccessTransaction) {
-//                    [message touchWithTransaction:postSuccessTransaction];
-//                }];
-//            }];
-//    }];
+    // Do nothing
 }
 
 - (void)didTapConversationItem:(id<ConversationViewItem>)viewItem quotedReply:(OWSQuotedReplyModel *)quotedReply

SessionMessagingKit/To Do/TSAccountManager.h

@@ -148,7 +148,6 @@ typedef NS_ENUM(NSUInteger, OWSRegistrationState) {
 // Re-registration is the process of re-registering _with the same phone number_.
 
 // Returns YES on success.
-- (BOOL)resetForReregistration;
 - (nullable NSString *)reregisterationPhoneNumber;
 - (BOOL)isReregistering;
 

SessionMessagingKit/To Do/TSAccountManager.m

@@ -404,37 +404,6 @@ NSString *const TSAccountManager_NeedsAccountAttributesUpdateKey = @"TSAccountMa
     [self postRegistrationStateDidChangeNotification];
 }
 
-#pragma mark - Re-registration
-
-- (BOOL)resetForReregistration
-{
-    @synchronized(self) {
-        NSString *_Nullable localNumber = self.localNumber;
-        if (!localNumber) {
-            return NO;
-        }
-
-        _isRegistered = NO;
-        _cachedLocalNumber = nil;
-        _phoneNumberAwaitingVerification = nil;
-        _cachedIsDeregistered = nil;
-        [LKStorage writeSyncWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
-            [transaction removeAllObjectsInCollection:TSAccountManager_UserAccountCollection];
-
-            // TODO TODO TODO
-//            [[OWSPrimaryStorage sharedManager] resetSessionStore:transaction];
-
-            [transaction setObject:localNumber
-                            forKey:TSAccountManager_ReregisteringPhoneNumberKey
-                      inCollection:TSAccountManager_UserAccountCollection];
-        }];
-
-        [self postRegistrationStateDidChangeNotification];
-
-        return YES;
-    }
-}
-
 - (nullable NSString *)reregisterationPhoneNumber
 {
     NSString *_Nullable result = [self.dbConnection stringForKey:TSAccountManager_ReregisteringPhoneNumberKey