dmaengine: moxart-dma: remove unused struct 'moxart_filter_data'

Remove unused struct 'moxart_filter_data'
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20240516152825.262578-1-linux@treblig.orgSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/dma/moxart-dma.c

@@ -148,11 +148,6 @@ struct moxart_dmadev {
 	unsigned int			irq;
 };
 
-struct moxart_filter_data {
-	struct moxart_dmadev		*mdc;
-	struct of_phandle_args		*dma_spec;
-};
-
 static const unsigned int es_bytes[] = {
 	[MOXART_DMA_DATA_TYPE_S8] = 1,
 	[MOXART_DMA_DATA_TYPE_S16] = 2,