Remove Phoenix and notebooks (Phase 5) (#2561)

* Remove Phoenix and notebook core

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Copilot-Session: 4e4f2ebd-f2f8-4c2b-b63d-40e1a2b1c662

* Fix merge issue.

---------

Copilot-Session: 4e4f2ebd-f2f8-4c2b-b63d-40e1a2b1c662

package.json

@@ -14,11 +14,7 @@
     "@fluentui/react": "8.119.0",
     "@fluentui/react-components": "9.54.2",
     "@microsoft/applicationinsights-web": "2.6.1",
-    "@nteract/commutable": "7.5.1",
-    "@nteract/core": "15.1.9",
-    "@nteract/fixtures": "2.3.0",
     "@nteract/markdown": "4.6.0",
-    "@nteract/myths": "0.1.9",
     "@octokit/request": "8.4.1",
     "@octokit/rest": "17.9.2",
     "@testing-library/jest-dom": "6.4.6",
@@ -87,7 +83,6 @@
     "react-window": "1.8.10",
     "react-youtube": "9.0.1",
     "reflect-metadata": "0.1.13",
-    "rx-jupyter": "5.5.12",
     "shell-quote": "1.10.0",
     "styled-components": "5.0.1",
     "swr": "0.4.0",
@@ -149,6 +144,7 @@
     "@types/sinon": "2.3.3",
     "@types/styled-components": "5.1.32",
     "@types/underscore": "1.7.36",
+    "@types/uuid": "9.0.8",
     "@types/youtube-player": "5.5.6",
     "@typescript-eslint/eslint-plugin": "6.7.4",
     "@typescript-eslint/parser": "6.7.4",