remove titan.TestPorts.GPIO module

We don't use it, and it suddenly disappeared from git.eclipse.org,
see https://bugs.eclipse.org/bugs/show_bug.cgi?id=559942

Change-Id: I5e5b9ab3dca9ff574980dad37616cdc981dd8607
diff --git a/deps/Makefile b/deps/Makefile
index d896889..857b889 100644
--- a/deps/Makefile
+++ b/deps/Makefile
@@ -48,7 +48,6 @@
 			titan.ProtocolModules.SCTP \
 			titan.ProtocolModules.SUA \
 			titan.ProtocolModules.SDP \
-			titan.TestPorts.GPIO \
 			titan.ProtocolModules.BSSAPP_v7.3.0 \
 			titan.ProtocolModules.BSSGP_v13.0.0 \
 			titan.ProtocolModules.GTP_v13.5.0 \
@@ -112,7 +111,6 @@
 titan.ProtocolModules.UDP_commit=		R.4.A-5-geea8aa3
 titan.TestPorts.Common_Components.Socket-API_commit=	R.6.A-6-gf4380d0
 titan.TestPorts.Common_Components.Abstract_Socket_commit=	R.9.B-4-gbd41994
-titan.TestPorts.GPIO_commit=			R.2.A-8-g9728492
 titan.TestPorts.HTTPmsg_commit=			R.9.B-4-g9a0dfde
 titan.TestPorts.IPL4asp_commit=			R.30.E
 titan.TestPorts.LANL2asp_commit=		R.8.C-3-gb07c265