misc: Remove autotools_stage as it was removed in master

autotools_stage has only included autotools at least in dora and
later and we can simply change this.
diff --git a/recipes-misc/libsmpp/libsmpp34_git.bb b/recipes-misc/libsmpp/libsmpp34_git.bb
index ed2e48b..4edbebd 100644
--- a/recipes-misc/libsmpp/libsmpp34_git.bb
+++ b/recipes-misc/libsmpp/libsmpp34_git.bb
@@ -13,7 +13,7 @@
 
 PARALLEL_MAKE = ""
 
-inherit autotools_stage pkgconfig
+inherit autotools pkgconfig
 
 PACKAGES =+ "${PN}-apps"
 FILES_${PN}-apps = "${bindir}/*"