TKSA: send the secondary address the caller gives

TKSA ORed the accumulator with $90 before sending it. Its callers pass
the secondary address plus $60, as the routine's own comment asks, so
TKSA turned a TALK secondary address $60-$6F into $F0-$FF, the OPEN
command, on the bus.

The contract (C64 Programmer's Reference Guide, TKSA; Michael Steil,
"Commodore Peripheral Bus: Part 2", https://www.pagetable.com/?p=1031,
which gives TKSA's argument as A = $60 + secondary address): TKSA sends
the byte in A as the secondary address to the device told to TALK.
TKSA now sends A as it is.

Upstream: https://github.com/MEGA65/open-roms/issues/116 (bug 1)

src/kernal/iec/tksa.s

@@ -28,8 +28,6 @@ TKSA:
 	; - https://www.lemon64.com/forum/viewtopic.php?t=57694&sid=531ba3592bcffadef2ac8b9162f2e529
 	; - https://www.pagetable.com/?p=1031 (Kernal API description)
 
-	ora #$90
-
 	jmp common_untlk_tksa
 
 } else {