Undo changes.

src/ExpressionEvaluator/Package/project.lock.json

@@ -35,14 +35,6 @@
           "lib/net45/Microsoft.DiaSymReader.dll": {}
         }
       },
-      "Microsoft.NetFX20/1.0.3": {
-        "compile": {
-          "lib/net20/mscorlib.dll": {}
-        },
-        "runtime": {
-          "lib/net20/mscorlib.dll": {}
-        }
-      },
       "System.Collections/4.0.10": {
         "compile": {
           "ref/net46/_._": {}
@@ -163,17 +155,6 @@
         "[Content_Types].xml"
       ]
     },
-    "Microsoft.NetFX20/1.0.3": {
-      "sha512": "7hPxu4q65ap1yiAuniskpMIJyTwviBIRItCYXozm/6Ikt03Uw3NNQNNzf7mjOEYYi9CG9VIv1KYwBGEa3FWAcg==",
-      "type": "Package",
-      "files": [
-        "_rels/.rels",
-        "Microsoft.NetFX20.nuspec",
-        "lib/net20/mscorlib.dll",
-        "package/services/metadata/core-properties/92df590a790045efaea1dc300f16b60b.psmdcp",
-        "[Content_Types].xml"
-      ]
-    },
     "System.Collections/4.0.10": {
       "sha512": "ux6ilcZZjV/Gp7JEZpe+2V1eTueq6NuoGRM3eZCFuPM25hLVVgCRuea6STW8hvqreIOE59irJk5/ovpA5xQipw==",
       "type": "Package",