treewide: cleanup kernel symbol references

We only use 5.15 kernel. So remove all those unnecessary symbols
referencing 5.10 or 5.15 kernel.

Can be found with:
  git grep -E 'LINUX_5_1(0|5)'

Note that we remove the dependency from "sound-soc-chipdip-dac" instead
of removing the complete kernel package. The 5.15 version bump forgot to
delete the "@LINUX_5_10" dependency. The kernel package is still needed
in 5.15 kernel.

Signed-off-by: Nick Hainke <vincent@systemli.org>

package/kernel/linux/modules/netsupport.mk

@@ -1187,7 +1187,7 @@ define KernelPackage/sctp
   FILES:= $(LINUX_DIR)/net/sctp/sctp.ko
   AUTOLOAD:= $(call AutoLoad,32,sctp)
   DEPENDS:=+kmod-lib-crc32c +kmod-crypto-md5 +kmod-crypto-hmac \
-    +LINUX_5_15:kmod-udptunnel4 +LINUX_5_15:kmod-udptunnel6
+    +kmod-udptunnel4 +kmod-udptunnel6
 endef
 
 define KernelPackage/sctp/description
@@ -1443,7 +1443,6 @@ define KernelPackage/qrtr
   SUBMENU:=$(NETWORK_SUPPORT_MENU)
   TITLE:=Qualcomm IPC Router support
   HIDDEN:=1
-  DEPENDS:=@!LINUX_5_10
   KCONFIG:=CONFIG_QRTR
   FILES:= \
   $(LINUX_DIR)/net/qrtr/qrtr.ko