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/leds.mk

@@ -118,7 +118,6 @@ $(eval $(call KernelPackage,ledtrig-pattern))
 define KernelPackage/ledtrig-tty
   SUBMENU:=$(LEDS_MENU)
   TITLE:=LED Trigger for TTY devices
-  DEPENDS:=@LINUX_5_15
   KCONFIG:=CONFIG_LEDS_TRIGGER_TTY
   FILES:=$(LED_TRIGGER_DIR)/ledtrig-tty.ko
   AUTOLOAD:=$(call AutoLoad,50,ledtrig-tty)