ipaccess/Makefile.am: Remove unneeded libosmo-sigtran dep

Change-Id: Idc26f178fa8942fe407ca01e23b0a21955727dca
diff --git a/src/ipaccess/Makefile.am b/src/ipaccess/Makefile.am
index c504234..3578a40 100644
--- a/src/ipaccess/Makefile.am
+++ b/src/ipaccess/Makefile.am
@@ -10,7 +10,6 @@
 	$(LIBOSMOGSM_CFLAGS) \
 	$(LIBOSMOABIS_CFLAGS) \
 	$(COVERAGE_CFLAGS) \
-	$(LIBOSMOSIGTRAN_CFLAGS) \
 	$(NULL)
 
 AM_LDFLAGS = \
@@ -21,7 +20,6 @@
 	$(LIBOSMOCORE_LIBS) \
 	$(LIBOSMOGSM_LIBS) \
 	$(LIBOSMOABIS_LIBS) \
-	$(LIBOSMOSIGTRAN_LIBS) \
 	$(NULL)
 
 bin_PROGRAMS = \