Removed unused metadata from demo P4 programs

Change-Id: Ie50dd70ee6172fe6c77f8ce6e6be136db282219e
diff --git a/tools/test/p4src/p4-16/p4c-out/empty.p4info b/tools/test/p4src/p4-16/p4c-out/empty.p4info
new file mode 100644
index 0000000..00f6b9b
--- /dev/null
+++ b/tools/test/p4src/p4-16/p4c-out/empty.p4info
@@ -0,0 +1,35 @@
+tables {
+  preamble {
+    id: 33617813
+    name: "table0"
+    alias: "table0"
+  }
+  match_fields {
+    id: 1
+    name: "meta.dummy_metadata.dummyField"
+    bitwidth: 8
+    match_type: EXACT
+  }
+  action_refs {
+    id: 16836827
+  }
+  action_refs {
+    id: 16800567
+    annotations: "@defaultonly()"
+  }
+  size: 1024
+}
+actions {
+  preamble {
+    id: 16800567
+    name: "NoAction"
+    alias: "NoAction"
+  }
+}
+actions {
+  preamble {
+    id: 16836827
+    name: "dummy_action"
+    alias: "dummy_action"
+  }
+}