Nope. You have given away the right to make decisions on who can use the code when you assigned that license to it. Could you take said code, remove the licens

Nope. You have given away the right to make decisions on who can use the code when you assigned that license to it. Could you take said code, remove the license and make it available commercially? Sure, it is your code, but any older or previous copies are still available under the BSD license.