include: Remove compat include headers

Remove the compat headers as its been 2 releases since we introduced
them.

Signed-off-by: Kumar Gala <[email protected]>

Author: galak

CODEOWNERS

@@ -271,7 +271,6 @@
 /include/linker/app_smem*.ld              @andrewboie
 /include/linker/                          @andrewboie @andyross
 /include/logging/                         @nordic-krch
-/include/misc/                            @andrewboie @andyross
 /include/net/                             @jukkar @tbursztyka @pfalcon
 /include/net/buf.h                        @jukkar @jhedberg @tbursztyka @pfalcon
 /include/posix/                           @pfalcon

Kconfig.zephyr

@@ -413,15 +413,3 @@ config MISRA_SANE
 	  arrays are not permitted (and gcc will enforce this).
 
 endmenu
-
-
-menu "Compatibility"
-
-config COMPAT_INCLUDES
-	bool "Suppress warnings when using header shims"
-	default y
-	help
-	  Suppress any warnings from the pre-processor when including
-	  deprecated header files.
-
-endmenu