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

Make all changes to #include statements and build files.
diff --git a/include/osmocom/hnbap/NeighbourInfoRequestItem.h b/include/osmocom/hnbap/NeighbourInfoRequestItem.h
index 02ffd34..39fd6d7 100644
--- a/include/osmocom/hnbap/NeighbourInfoRequestItem.h
+++ b/include/osmocom/hnbap/NeighbourInfoRequestItem.h
@@ -12,7 +12,7 @@
 #include <asn_application.h>
 
 /* Including external dependencies */
-#include <osmocom/osmo-iuh/hnbap/HNB-RNL-Identity.h>
+#include <osmocom/hnbap/HNB-RNL-Identity.h>
 #include <constr_SEQUENCE.h>
 
 #ifdef __cplusplus
@@ -43,7 +43,7 @@
 #endif
 
 /* Referred external types */
-#include <osmocom/osmo-iuh/hnbap/IE-Extensions.h>
+#include <osmocom/hnbap/IE-Extensions.h>
 
 #endif	/* _NeighbourInfoRequestItem_H_ */
 #include <asn_internal.h>