ath10k-ct: remove outdated iommu revert patch

The issue described in the patch can not be reproduced in the latest
6.18 ath10k-ct driver. It should have been fixed by the upstream.

Signed-off-by: Shiji Yang <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/21089
Signed-off-by: Christian Marangi <[email protected]>

package/kernel/ath10k-ct/patches/004-Revert-wifi-ath10k-Use-iommu_paging_domain_alloc.patch

@@ -1,28 +0,0 @@
-From: Shiji Yang <[email protected]>
-Date: Fri, 28 Mar 2025 19:56:06 +0800
-Subject: [PATCH] Revert "wifi: ath10k: Use iommu_paging_domain_alloc()"
-
-IPQ4019 wireless can't start after upstream commit d5b7485588df[1].
-
-[1] https://github.com/torvalds/linux/commit/d5b7485588dffb39c5687e965623124ab7ebcd51
-Signed-off-by: Shiji Yang <[email protected]>
----
- ath10k-6.18/snoc.c | 6 +++---
- 1 file changed, 3 insertions(+), 3 deletions(-)
-
---- a/ath10k-6.18/snoc.c
-+++ b/ath10k-6.18/snoc.c
-@@ -1630,10 +1630,10 @@ static int ath10k_fw_init(struct ath10k
- 
- 	ar_snoc->fw.dev = &pdev->dev;
- 
--	iommu_dom = iommu_paging_domain_alloc(ar_snoc->fw.dev);
--	if (IS_ERR(iommu_dom)) {
-+	iommu_dom = iommu_domain_alloc(&platform_bus_type);
-+	if (!iommu_dom) {
- 		ath10k_err(ar, "failed to allocate iommu domain\n");
--		ret = PTR_ERR(iommu_dom);
-+		ret = -ENOMEM;
- 		goto err_unregister;
- 	}
-