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-osmocom/libosmo-sccp/libosmo-sccp.inc b/recipes-osmocom/libosmo-sccp/libosmo-sccp.inc
index 0b4ae81..3925ed8 100644
--- a/recipes-osmocom/libosmo-sccp/libosmo-sccp.inc
+++ b/recipes-osmocom/libosmo-sccp/libosmo-sccp.inc
@@ -7,6 +7,6 @@
 
 LIC_FILES_CHKSUM = "file://COPYING;md5=751419260aa954499f7abaabaa882bbe"
 
-inherit autotools_stage pkgconfig
+inherit autotools pkgconfig
 
 ALLOW_EMPTY_libosmo-sccp = "1"