split off osmo-sgsn: remove files, apply build

Change-Id: I5d27ff93e56cd13e0e70edd15e2080201e35e91f
diff --git a/osmoappdesc.py b/osmoappdesc.py
index 22210d5..f610e77 100644
--- a/osmoappdesc.py
+++ b/osmoappdesc.py
@@ -15,38 +15,20 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>
 
 
-# Most systems won't be able to use these, so they're separated out
-nitb_e1_configs = [
-    "doc/examples/osmo-nitb/bs11/openbsc-2bts-2trx.cfg",
-    "doc/examples/osmo-nitb/bs11/openbsc-1bts-2trx-hopping.cfg",
-    "doc/examples/osmo-nitb/bs11/openbsc-1bts-2trx.cfg",
-    "doc/examples/osmo-nitb/bs11/openbsc.cfg",
-    "doc/examples/osmo-nitb/nokia/openbsc_nokia_3trx.cfg",
-    "doc/examples/osmo-nitb/nanobts/openbsc-multitrx.cfg",
-    "doc/examples/osmo-nitb/rbs2308/openbsc.cfg"
-]
-
-
 app_configs = {
-    "osmo-bsc": ["doc/examples/osmo-bsc/osmo-bsc.cfg"],
-    "nat": ["doc/examples/osmo-bsc_nat/osmo-bsc_nat.cfg"],
     "gbproxy": ["doc/examples/osmo-gbproxy/osmo-gbproxy.cfg",
              "doc/examples/osmo-gbproxy/osmo-gbproxy-legacy.cfg"],
     "sgsn": ["doc/examples/osmo-sgsn/osmo-sgsn.cfg"],
-    "msc": ["doc/examples/osmo-msc/osmo-msc.cfg"],
     "gtphub": ["doc/examples/osmo-gtphub/osmo-gtphub-1iface.cfg"]
 }
 
 
-apps = [(4242, "src/osmo-bsc/osmo-bsc", "OsmoBSC", "osmo-bsc"),
-        (4244, "src/osmo-bsc_nat/osmo-bsc_nat",  "OsmoBSCNAT", "nat"),
-        (4246, "src/gprs/osmo-gbproxy", "OsmoGbProxy", "gbproxy"),
+apps = [(4246, "src/gprs/osmo-gbproxy", "OsmoGbProxy", "gbproxy"),
         (4245, "src/gprs/osmo-sgsn", "OsmoSGSN", "sgsn"),
-        (4254, "src/osmo-msc/osmo-msc", "OsmoMSC", "msc"),
         (4253, "src/gprs/osmo-gtphub", "OsmoGTPhub", "gtphub")
         ]
 
-vty_command = ["./src/osmo-msc/osmo-msc", "-c",
-               "doc/examples/osmo-msc/osmo-msc.cfg"]
+vty_command = ["./src/gprs/osmo-sgsn", "-c",
+               "doc/examples/osmo-sgsn/osmo-sgsn.cfg"]
 
-vty_app = apps[4] # reference apps[] entry for osmo-msc
+vty_app = apps[1]