You are right, I forgot to delete the mit license.
I have now removed the mit license and modified the license to accommodate commercial use of the source code.
Not a lawyer, but can you retroactively apply your new license to the previous commits?
Pretty sure though any commercial entity that downloaded the code whilst it was MIT licensed (or if they just clone from the commit before you changed the license) that they can use the code with that license. Again, not a lawyer, I may be full of shit!
When using the previous MIT license, the original license and copyright must be included. The original license may change in this case, and the new license must follow the original one.
Pretty sure though any commercial entity that downloaded the code whilst it was MIT licensed (or if they just clone from the commit before you changed the license) that they can use the code with that license. Again, not a lawyer, I may be full of shit!