NAME
	remove_call_out - remove a pending call_out

SYNOPSIS
	int remove_call_out(string function)


DESCRIPTION
	Removes a pending call_out and returns the time left for it
	to have been executed. If it is not found, -1 is returned.

SEE ALSO
	efun/call_out_info, efun/find_call_out, kfun/call_out
