m68k: Remove obsolete config NO_KERNEL_MSG

The use of the config NO_KERNEL_MSG is long gone. Remove this config from
m68k's debug kernel configuration setup.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/20230320123202.14474-1-lukas.bulwahn@gmail.comSigned-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

arch/m68k/Kconfig.debug

@@ -36,11 +36,6 @@ config HIGHPROFILE
 	help
 	  Use a fast secondary clock to produce profiling information.
 
-config NO_KERNEL_MSG
-	bool "Suppress Kernel BUG Messages"
-	help
-	  Do not output any debug BUG messages within the kernel.
-
 config BDM_DISABLE
 	bool "Disable BDM signals"
 	depends on COLDFIRE