samples: usb: console: fix configuration

This sample uses console driver and therefore
Kconfig option CONFIG_CONSOLE and CONFIG_UART_CONSOLE
are required.

Kconfig option CONFIG_USB_UART_CONSOLE no longer has
any influence here and should be removed.

Signed-off-by: Johann Fischer <[email protected]>

Author: jfischer-no

samples/subsys/usb/console/prj.conf

@@ -2,5 +2,6 @@ CONFIG_USB_DEVICE_STACK=y
 CONFIG_USB_DEVICE_PRODUCT="Zephyr USB console sample"
 
 CONFIG_SERIAL=y
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
 CONFIG_UART_LINE_CTRL=y
-CONFIG_USB_UART_CONSOLE=y