[][Remove useless linux v5.4 patch to fix trunk build]

[Description]
Remove useless linux v5.4 patch to fix trunk build

[Release-log]
N/A

Change-Id: I269d8368f14285d7866e2e563a1f7849e5531b37
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5770039
diff --git a/openwrt_patches/103-generic-kernel-config-for-mtk-snand-driver.patch b/openwrt_patches/103-generic-kernel-config-for-mtk-snand-driver.patch
deleted file mode 100644
index 4df19fd..0000000
--- a/openwrt_patches/103-generic-kernel-config-for-mtk-snand-driver.patch
+++ /dev/null
@@ -1,10 +0,0 @@
---- a/target/linux/generic/config-5.4
-+++ b/target/linux/generic/config-5.4
-@@ -3273,6 +3273,7 @@ CONFIG_MTD_SPLIT_SUPPORT=y
- # CONFIG_MTD_UIMAGE_SPLIT is not set
- # CONFIG_MTD_VIRT_CONCAT is not set
- # CONFIG_MTK_MMC is not set
-+# CONFIG_MTK_SPI_NAND is not set
- CONFIG_MULTIUSER=y
- # CONFIG_MUTEX_SPIN_ON_OWNER is not set
- # CONFIG_MV643XX_ETH is not set