Housekeeping: 4GCommunity and Mint SIM moved

I've moved discussions for 4GCommunity and Mint SIM from "Other MVNOs" to their own dedicated forums/subcategories.

You can find the new forums here:

https://www.nthcircle.com/forum/4gcommunity

https://www.nthcircle.com/forum/mint-sim

I'm glad. They're worthy of their own sections.