drop unneccessary duplicate linking: osmo-nitb

Change-Id: I430adbb1e0c6382317da282bcf5ef73cf9496f80
Reviewed-on: https://gerrit.osmocom.org/89
Tested-by: Jenkins Builder
Reviewed-by: Holger Freyther <holger@freyther.de>
diff --git a/openbsc/src/osmo-nitb/Makefile.am b/openbsc/src/osmo-nitb/Makefile.am
index d3b97f8..3b7cc8d 100644
--- a/openbsc/src/osmo-nitb/Makefile.am
+++ b/openbsc/src/osmo-nitb/Makefile.am
@@ -11,7 +11,6 @@
 osmo_nitb_LDADD = \
 		$(top_builddir)/src/libbsc/libbsc.a \
 		$(top_builddir)/src/libmsc/libmsc.a \
-		$(top_builddir)/src/libbsc/libbsc.a \
 		$(top_builddir)/src/libtrau/libtrau.a \
 		$(top_builddir)/src/libcommon/libcommon.a \
 		-ldbi $(LIBCRYPT)				   \