chore: clean up root dependencies

[tido64]

Description

Remove root dependencies that are no longer needed.

Test plan

Enable pnpm mode:

diff --git a/.yarnrc.yml b/.yarnrc.yml
index 1bf9d579..6771046f 100644
--- a/.yarnrc.yml
+++ b/.yarnrc.yml
@@ -7,7 +7,7 @@ logFilters:
     level: discard
   - code: YN0013 # X can't be found in the cache and will be fetched from the remote registry
     level: discard
-nodeLinker: node-modules
+nodeLinker: pnpm
 npmRegistryServer: "https://registry.npmjs.org"
 packageExtensions:
   "@fluentui/utilities@*":

Test everything:

yarn
yarn test