staging: mt7621-mmc: Remove unused variable dma_xfer from msdc_host

The field dma_xfer of the struct msdc_host is not used anymore, remove
it.
Signed-off-by: Christian Lütke-Stetzkamp <christian@lkamp.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/mt7621-mmc/mt6575_sd.h

@@ -922,7 +922,6 @@ struct msdc_host {
 
 	struct msdc_dma             dma;            /* dma channel */
 	u32                         dma_xfer_size;  /* dma transfer size in bytes */
-	int                         dma_xfer;       /* dma transfer mode */
 
 	u32                         timeout_ns;     /* data timeout ns */
 	u32                         timeout_clks;   /* data timeout clks */

drivers/staging/mt7621-mmc/sd.c

@@ -603,7 +603,7 @@ static void msdc_abort_data(struct msdc_host *host)
 	void __iomem *base = host->base;
 	struct mmc_command *stop = host->mrq->stop;
 
-	ERR_MSG("Need to Abort. dma<%d>", host->dma_xfer);
+	ERR_MSG("Need to Abort.");
 
 	msdc_reset_hw(host);
 	msdc_clr_fifo();