Remove copper below CC/CV module on Dock PCB

[ClemensElflein]

Since the red PCB for the dock does not feature standoffs anymore, we should remove the copper below the CC/CV module.

If people screw the module so hard that they damage the silkscreen, there might be shorts.

[houk001]

Or just add spacers about 2 milimeter high to separate CC/CV module from board. I create spacers from heat shrink tube because also worried about shorts.