INT 15 - PhysTechSoft PTS ROM-DOS - REMOVE BREAKPOINT                           
	AX = E909h
	ES:SI = breakpoint address
Return:	AH = error code
	    00h no error
	    01h incorrect parameter
SeeAlso: AX=E908h,INT 14/AH=05h"PTS ROM-DOS",INT 14/AH=06h"PTS ROM-DOS"