usb: dwc2: Remove unused hardware parameter

The dma_desc_fs_enable does not correspond to any hardware parameter and
is unused. Remove it.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/dwc2/core.h

@@ -516,7 +516,6 @@ struct dwc2_hw_params {
 	unsigned op_mode:3;
 	unsigned arch:2;
 	unsigned dma_desc_enable:1;
-	unsigned dma_desc_fs_enable:1;
 	unsigned enable_dynamic_fifo:1;
 	unsigned en_multiple_tx_fifo:1;
 	unsigned host_rx_fifo_size:16;