Remove BSSAPP, BSSGP, BSSMAP, GTP, GTPv2, ISUP, LLC, MobileL3, NS, SNDCP

All of those now have separate upstream repositories on git://git.eclipse.org/gitroot/titan
and we don't need to keep a copy around
diff --git a/ggsn_tests/gen_links.sh b/ggsn_tests/gen_links.sh
index 1297938..ee8d7b0 100755
--- a/ggsn_tests/gen_links.sh
+++ b/ggsn_tests/gen_links.sh
@@ -39,7 +39,7 @@
 FILES="UDP_EncDec.cc  UDP_Types.ttcn"
 gen_links $DIR $FILES
 
-DIR=../GTP_v13.5.0_CNL113843_LATEST/src
+DIR=$BASEDIR/titan.ProtocolModules.GTP_v13.5.0/src
 FILES="GTPC_EncDec.cc  GTPC_Types.ttcn  GTPU_EncDec.cc  GTPU_Types.ttcn"
 gen_links $DIR $FILES