Remove spurious dup in io.serial.unix/linux
Remove spurious dup in io.serial.unix/linux

mcandre/factor,cataska/factor,cataska/factor,ceninan/factor,mcandre/factor,erg/factor,ceninan/factor,seckar/factor,erg/factor,mcandre/factor,erg/factor,seckar/factor,littledan/Factor,erg/factor,mcandre/factor,erg/factor,ceninan/factor,littledan/Factor,kingcons/factor,kingcons/factor,mcandre/factor,kingcons/factor,mcandre/factor,erg/factor,seckar/factor,littledan/Factor,littledan/Factor,mcandre/factor,ceninan/factor,cataska/factor,kingcons/factor,erg/factor,cataska/factor