If you removed the HBC channel, it's still possible to do something, ONLY if you kept the cIOS.
But you answered no to that question
at the same time, you answered "yes" to the question asking if it was vWii or Wii. the good answer was "vWii", the bad answer was "Wii". any other answers means you didn't understand the question.
We can still try something, hoping that you still have cIOS 249, but that's your last hope.
If it doesn't work, then you can't fix it.
Be sure to follow what I'll tell you, and don't try something by yourself again.
Needed files :
1. Download the "IOS58 installer" channel, made by Damysteryman, here :
https://gbatemp.net/posts/4755115
2. Download the "Yet Another Wad Manager Mod" here :
http://www.hacksden.com/attachment.php?attachmentid=793&d=1369548542
3. You need a CLEAN IOS58. you followed the softmod guide which told you to make backups of your IOS right?
If you don't have it, let me know.
steps:
1. (re)name your clean vWii (NOT WII) IOS58 file to : IOS58-v6432.wad
2. copy that file to your SD card root.
3. copy the YAWMM boot.elf to the SD Card root
4. copy the V58i.wad on your SD Card (root or SD:/wad/)
5. put SD card on your WiiU, run the exploit again.
Instead of launching the hackmii installer, it will launch the Wad manager.
6. If It asks you if you want to reload the IOS, select yes and select either : 249 or 250 or 236.
7. select "install wad" and install the "V58i.wad" with the wad manager.
DO NOT INSTALL THE IOS58-v6432.wad !!!! (it will not work, anyway)
It will install the "IOS 58 installer" as a channel on your console's system menu.
8. exit the wad manager.
If you get DSI exception when launching the wad manager, there's another method to launch it, but you need more homebrew.
https://gbatemp.net/posts/4756201
before following this link, let me know if you have DSI exception. don't do things by yourself, that's what made you in your current situation!
9. launch the "IOS58 installer" channel located on your system menu, and it will reinstall the IOS58 using the CLEAN dump of the IOS, using the file IOS58-v6432.wad
10 . now, replace back the "boot.elf" from the SD card root with the one from hackmii installer.
11. run the exploit again.
It will run hackmii installer with the clean IOS58.
12. reinstall the HBC.