docs/system/devices/usb/canokey: remove limitations on qemu-xhci

Signed-off-by: Hongren (Zenithal) Zheng <i@zenithal.me>
Message-Id: <YqcqeIpY4h7ZQPWH@Sun>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

docs/system/devices/canokey.rst

@@ -146,16 +146,6 @@ multiple CanoKey QEMU running, namely you can not
 Also, there is no lock on canokey-file, thus two CanoKey QEMU instance
 can not read one canokey-file at the same time.
 
-Another limitation is that this device is not compatible with ``qemu-xhci``,
-in that this device would hang when there are FIDO2 packets (traffic on
-interrupt endpoints). If you do not use FIDO2 then it works as intended,
-but for full functionality you should use old uhci/ehci bus and attach canokey
-to it, for example
-
-.. parsed-literal::
-
-   |qemu_system| -device piix3-usb-uhci,id=uhci -device canokey,bus=uhci.0
-
 References
 ==========