How do I remove the custom maps I have "downloaded" from my map list? They are clutter and it is not like you get to try a map out first to see if it sucks before you are stuck with it forever.
So they're stored in:
C:\ProgramData\Blizzard Entertainment\Battle.net\Cache, unfortunately that's not going to help you as they're hashed. This makes it hard to tell which is which.
If only some kind soul would invent a tool to solve this problem...