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

Make all changes to #include statements and build files.
diff --git a/include/osmocom/hnbap/HNB-GWResponse.h b/include/osmocom/hnbap/HNB-GWResponse.h
index d2d99fa..436cf55 100644
--- a/include/osmocom/hnbap/HNB-GWResponse.h
+++ b/include/osmocom/hnbap/HNB-GWResponse.h
@@ -12,9 +12,9 @@
 #include <asn_application.h>
 
 /* Including external dependencies */
-#include <osmocom/osmo-iuh/hnbap/HNBConfigInfo.h>
-#include <osmocom/osmo-iuh/hnbap/RNC-ID.h>
-#include <osmocom/osmo-iuh/hnbap/UnknownU-RNTIIndication.h>
+#include <osmocom/hnbap/HNBConfigInfo.h>
+#include <osmocom/hnbap/RNC-ID.h>
+#include <osmocom/hnbap/UnknownU-RNTIIndication.h>
 #include <constr_CHOICE.h>
 
 #ifdef __cplusplus