i doubt those terminals were meant to be removed, just use some picks or something and force them out. I recommend being smart about it though, cut those connectors off and buy the exact same ones or any connectors of your choice or , actually you don't need connectors at all, just splice or solder them together, wire to wire. think about it what is the purpose of connectors? to connect wires so that they can be easily disconnected later, you don't need that shit