Remove osmo-iuh subdir level from include/ (2/2)

Make all changes to #include statements and build files.
diff --git a/include/osmocom/ranap/RANAP_RAB-AssignmentRequest.h b/include/osmocom/ranap/RANAP_RAB-AssignmentRequest.h
index 1fbe112..508b56d 100644
--- a/include/osmocom/ranap/RANAP_RAB-AssignmentRequest.h
+++ b/include/osmocom/ranap/RANAP_RAB-AssignmentRequest.h
@@ -11,7 +11,7 @@
 #include <asn_application.h>
 
 /* Including external dependencies */
-#include <osmocom/osmo-iuh/ranap/RANAP_IE.h>
+#include <osmocom/ranap/RANAP_IE.h>
 #include <asn_SEQUENCE_OF.h>
 #include <constr_SEQUENCE_OF.h>
 #include <constr_SEQUENCE.h>