HID: consolidate MacbookAir 4,1 mappings

MacbookAir 4,1 doesn't require extra mapping table, as the mappings
are identical to apple_fn_keys[].

Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/hid-apple.c

@@ -82,28 +82,6 @@ static const struct apple_key_translation macbookair_fn_keys[] = {
 	{ }
 };
 
-static const struct apple_key_translation macbookair4_fn_keys[] = {
-	{ KEY_BACKSPACE, KEY_DELETE },
-	{ KEY_ENTER,	KEY_INSERT },
-	{ KEY_F1,	KEY_BRIGHTNESSDOWN, APPLE_FLAG_FKEY },
-	{ KEY_F2,	KEY_BRIGHTNESSUP,   APPLE_FLAG_FKEY },
-	{ KEY_F3,	KEY_SCALE,          APPLE_FLAG_FKEY },
-	{ KEY_F4,	KEY_DASHBOARD,      APPLE_FLAG_FKEY },
-	{ KEY_F5,	KEY_KBDILLUMDOWN,   APPLE_FLAG_FKEY },
-	{ KEY_F6,	KEY_KBDILLUMUP,     APPLE_FLAG_FKEY },
-	{ KEY_F7,	KEY_PREVIOUSSONG,   APPLE_FLAG_FKEY },
-	{ KEY_F8,	KEY_PLAYPAUSE,      APPLE_FLAG_FKEY },
-	{ KEY_F9,	KEY_NEXTSONG,       APPLE_FLAG_FKEY },
-	{ KEY_F10,	KEY_MUTE,           APPLE_FLAG_FKEY },
-	{ KEY_F11,	KEY_VOLUMEDOWN,     APPLE_FLAG_FKEY },
-	{ KEY_F12,	KEY_VOLUMEUP,       APPLE_FLAG_FKEY },
-	{ KEY_UP,	KEY_PAGEUP },
-	{ KEY_DOWN,	KEY_PAGEDOWN },
-	{ KEY_LEFT,	KEY_HOME },
-	{ KEY_RIGHT,	KEY_END },
-	{ }
-};
-
 static const struct apple_key_translation apple_fn_keys[] = {
 	{ KEY_BACKSPACE, KEY_DELETE },
 	{ KEY_ENTER,	KEY_INSERT },
@@ -208,9 +186,6 @@ static int hidinput_apple_event(struct hid_device *hid, struct input_dev *input,
 		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 >= USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI &&
-				hid->product <= USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS)
-			table = macbookair4_fn_keys;
 		else if (hid->product < 0x21d || hid->product >= 0x300)
 			table = powerbook_fn_keys;
 		else