INT 2F U - DOS 2.x only PRINT.COM - REMOVE FILE FROM PRINT QUEUE                
	AH = 01h
	DS:DX -> FCBsee File Control Block (see #01345 at INT 21/AH=0Fh) for file to be canceled
Return: AH = number of files currently in print queue
	AL = 00h (successful)
	ES:BX -> print queue (10 FCBs; first byte of FFh indicates unused)
	ES:DX -> currently-printing FCBsee File Control Block (if DX=FFFFh, none printing)
Notes:	DOS 2.x PRINT.COM does not chain to previous INT 2F handler
	values in AH other than 00h or 01h cause PRINT to return the number of
	  files in the queue in AH
SeeAlso: AH=00h"PRINT.COM",AX=0103h