gbproxy: don't link unnecessary

* remove sigtran include from common_vty.c because nothing uses it
* remove LIBOSMOSIGTRAN_LIBS from generic OSMO_LIBS
* remove LIBOSMOABIS_LIBS from generic OSMO_LIBS

Both LIBOSMOSIGTRAN and LIBOSMOABIS are linked explicitly when necessary
already anyway.

Change-Id: I015a9d858bc2a95f8c9a4aedd3e0a84eadcf84e1
diff --git a/src/gprs/Makefile.am b/src/gprs/Makefile.am
index 654604b..764acba 100644
--- a/src/gprs/Makefile.am
+++ b/src/gprs/Makefile.am
@@ -28,13 +28,11 @@
 
 OSMO_LIBS = \
 	$(LIBOSMOCORE_LIBS) \
-	$(LIBOSMOABIS_LIBS) \
 	$(LIBOSMOGSM_LIBS) \
 	$(LIBOSMOVTY_LIBS) \
 	$(LIBOSMOCTRL_LIBS) \
 	$(LIBOSMOGB_LIBS) \
 	$(LIBGTP_LIBS) \
-	$(LIBOSMOSIGTRAN_LIBS) \
 	$(NULL)
 
 bin_PROGRAMS = \
diff --git a/src/libcommon/common_vty.c b/src/libcommon/common_vty.c
index ac3c7fc..e960550 100644
--- a/src/libcommon/common_vty.c
+++ b/src/libcommon/common_vty.c
@@ -33,7 +33,6 @@
 #include <osmocom/vty/command.h>
 #include <osmocom/vty/buffer.h>
 #include <osmocom/vty/vty.h>
-#include <osmocom/sigtran/osmo_ss7.h>
 
 
 int bsc_vty_go_parent(struct vty *vty)