The field "dvr" in struct dmxdev is competely unused. Remove
it and code which allocates, initializes and frees it.
Signed-off-by: NPeter Beutner <p.beutner@gmx.net>
Signed-off-by: NJohannes Stezenbach <js@linuxtv.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>