Fixup a vscode config file. (#643)

The rest of the repo configs are not prepared to handle separate
workspaces for the different modules (e.g., linting rules break and fail
to find the right config files).

So for now we back this change out in a way that seems more friendly
with existing vscodes.

mlos.code-workspace

@@ -2,7 +2,8 @@
     "folders": [
         {
             "path": "."
-        },
+        }
+        /*
         {
             "path": "mlos_core"
         },
@@ -12,5 +13,6 @@
         {
             "path": "mlos_viz"
         }
+        */
     ]
 }