hid/apple: modern macbook airs use the standard apple function key translations

This removes the use of the special "macbookair_fn_keys" keyboard
translation table for the MacBookAir4,x models (ie the 2011 refresh).
They use the standard apple_fn_keys[] translation.  Apparently only the
old MacBook Air's need a different translation table.

This mirrors the change that commit da617c7c ("HID: consolidate
MacbookAir 4,1 mappings") did for the WELLSPRING6A ones, but does it for
the WELLSPRING6 model used on the MacBookAir4,2.
Reported-and-tested-by: NDirk Hohndel <hohndel@infradead.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Joshua V Dillon <jvdillon@gmail.com>
Cc: Chase Douglas <chase.douglas@canonical.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/hid/hid-apple.c

@@ -183,9 +183,6 @@ static int hidinput_apple_event(struct hid_device *hid, struct input_dev *input,
 		if (hid->product >= USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI &&
 				hid->product <= USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS)
 			table = macbookair_fn_keys;
-		else if (hid->product >= USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI &&
-				hid->product <= USB_DEVICE_ID_APPLE_WELLSPRING6_JIS)
-			table = macbookair_fn_keys;
 		else if (hid->product < 0x21d || hid->product >= 0x300)
 			table = powerbook_fn_keys;
 		else