dmaengine: bestcomm: Code cleanup for bcom_sram_init

This part was commented from commit 2f9ea1b ("[POWERPC]
bestcomm: core bestcomm support for Freescale MPC5200") in
about 16 years before.

If there are no plans to enable this part code in the future,
we can remove this dead code.

Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Link: https://lore.kernel.org/r/20240124095502.480506-1-chentao@kylinos.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>

Author: KunWuChan

drivers/dma/bestcomm/sram.c

@@ -90,13 +90,8 @@ int bcom_sram_init(struct device_node *sram_node, char *owner)
 	bcom_sram->rh = rh_create(4);
 
 	/* Attach the free zones */
-#if 0
-	/* Currently disabled ... for future use only */
-	reg_addr_p = of_get_property(sram_node, "available", &psize);
-#else
 	regaddr_p = NULL;
 	psize = 0;
-#endif
 
 	if (!regaddr_p || !psize) {
 		/* Attach the whole zone */