Fix the manifest to include tests + remove project version

TestProjects/ShaderGraph/Packages/manifest.json

     "com.unity.render-pipelines.high-definition": "file:../../../com.unity.render-pipelines.high-definition",
     "com.unity.render-pipelines.lightweight": "file:../../../com.unity.render-pipelines.lightweight",
     "com.unity.shadergraph": "file:../../../com.unity.shadergraph",
+    "com.unity.testframework.graphics": "file:../../../com.unity.testframework.graphics",
-    "com.unity.render-pipelines.shadergraph"
+    "com.unity.render-pipelines.shadergraph",
+    "com.unity.testframework.graphics"
   ]
 }

TestProjects/ShaderGraph/ProjectSettings/ProjectVersion.txt

-m_EditorVersion: 2018.2.0b10