Remove netcfg from the list of base modules.

It's obsolete and -- other than a mention in the reference RIL and
another in a shell script that no longer works -- unused.

Change-Id: Ibbf2613778802222865528644c7e59a2d7c68b48
diff --git a/target/product/base.mk b/target/product/base.mk
index 0d052b5..85c01a2 100644
--- a/target/product/base.mk
+++ b/target/product/base.mk
@@ -95,7 +95,6 @@
     monkey \
     mtpd \
     ndc \
-    netcfg \
     netd \
     ping \
     ping6 \