hw/usb: Remove the USB bluetooth dongle device

We are going to remove the bluetooth backend, so the USB bluetooth
dongle can not work anymore. It's a completely optional device, no
board depends on it, so let's simply remove it now.

Message-Id: <20191120091014.16883-3-thuth@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

hw/usb/Kconfig

@@ -82,11 +82,6 @@ config USB_NETWORK
     default y
     depends on USB
 
-config USB_BLUETOOTH
-    bool
-    default y
-    depends on USB
-
 config USB_SMARTCARD
     bool
     default y

hw/usb/Makefile.objs

@@ -25,7 +25,6 @@ common-obj-$(CONFIG_USB_STORAGE_UAS)  += dev-uas.o
 common-obj-$(CONFIG_USB_AUDIO)        += dev-audio.o
 common-obj-$(CONFIG_USB_SERIAL)       += dev-serial.o
 common-obj-$(CONFIG_USB_NETWORK)      += dev-network.o
-common-obj-$(CONFIG_USB_BLUETOOTH)    += dev-bluetooth.o
 
 ifeq ($(CONFIG_USB_SMARTCARD),y)
 common-obj-y                          += dev-smartcard-reader.o

qemu-doc.texi

@@ -983,21 +983,6 @@ For instance, user-mode networking can be used with
 Smartcard reader device
 @item usb-audio
 USB audio device
-@item usb-bt-dongle
-Bluetooth dongle for the transport layer of HCI. It is connected to HCI
-scatternet 0 by default (corresponds to @code{-bt hci,vlan=0}).
-Note that the syntax for the @code{-device usb-bt-dongle} option is not as
-useful yet as it was with the legacy @code{-usbdevice} option. So to
-configure an USB bluetooth device, you might need to use
-"@code{-usbdevice bt}[:@var{hci-type}]" instead. This configures a
-bluetooth dongle whose type is specified in the same format as with
-the @option{-bt hci} option, @pxref{bt-hcis,,allowed HCI types}.  If
-no type is given, the HCI logic corresponds to @code{-bt hci,vlan=0}.
-This USB device implements the USB Transport Layer of HCI.  Example
-usage:
-@example
-@command{@value{qemu_system}} [...@var{OPTIONS}...] @option{-usbdevice} bt:hci,vlan=3 @option{-bt} device:keyboard,vlan=3
-@end example
 @end table
 
 @node host_usb_devices