dma-mapping: remove dma_deconfigure

This goes through a lot of hooks just to call arch_teardown_dma_ops.
Replace it with a direct call instead.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>

kernel/dma/mapping.c

@@ -327,9 +327,3 @@ void dma_common_free_remap(void *cpu_addr, size_t size, unsigned long vm_flags)
 	vunmap(cpu_addr);
 }
 #endif
-
-void dma_deconfigure(struct device *dev)
-{
-	of_dma_deconfigure(dev);
-	acpi_dma_deconfigure(dev);
-}