Remove extension from spike

.devcontainer/devcontainer.json

@@ -1,6 +1,5 @@
 {
     "extensions": [
-        "gh-gh-dogfooding.codespaces-zero",
         "ms-toolsai.jupyter",
         "ms-python.python"
     ],
@@ -9,4 +8,4 @@
         "defaultFile": "src/Linear.ipynb"
       }
     }
-  }
+  }