ALSA: line6: Remove struct usb_line6_podhd
ALSA: line6: Remove struct usb_line6_podhd

It's identical with struct usb_line6.

Signed-off-by: Takashi Iwai <4596b3305151c7ee743192a95d394341e3d3b644@suse.de>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs