[PATCH 6.12 2/2] Revert "Bluetooth: btusb: Add ASUS USB-BT540 for Realtek 8761CU"

[Christoph Zwerschke <cito@online.de>]

This reverts commit f05baf6e0680d8c10d2fbbc5953848fc3e3db957 which is
commit 980084de4d9b25193398d89a1c0430ba3501b683 upstream.

With the device ID in the table, the adapter is handed over to btrtl,
which in this tree, together with the backport of commit 4a23ce935f74
("Bluetooth: btrtl: Add the support for RTL8761CUV"), now requires
rtl_bt/rtl8761cu_fw.bin. That file is only shipped by linux-firmware
since 20251111. On systems with older firmware packages, such as
Debian trixie, the adapter no longer initializes. Without the ID entry
it binds via the generic Bluetooth class and works on its ROM firmware,
as it did before the backport.

Mainline keeps the ID entry, so this revert is for 6.12.y only, as agreed
in the regression thread.

Reported-by: Erik Brangs <erik.brangs@gmx.de>
Closes: https://bugs.debian.org/1149377
Link: https://lore.kernel.org/all/179104011040.2214689.5921682013387867802@eldamar.lan/
Signed-off-by: Christoph Zwerschke <cito@online.de>
---
 drivers/bluetooth/btusb.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index bb83dc0b031e..f8b5492c8021 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -817,10 +817,6 @@ static const struct usb_device_id quirks_table[] = {
 	{ USB_DEVICE(0x37ad, 0x0600), .driver_info = BTUSB_REALTEK |
 						     BTUSB_WIDEBAND_SPEECH },
 
-	/* Additional Realtek 8761CU Bluetooth devices */
-	{ USB_DEVICE(0x0b05, 0x1bef), .driver_info = BTUSB_REALTEK |
-						     BTUSB_WIDEBAND_SPEECH },
-
 	/* Additional Realtek 8821AE Bluetooth devices */
 	{ USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 	{ USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
-- 
2.56.0