refactor(nms): Remove fbc-js-core select component

[thmsschmitt]

Summary

There was only one place left were the fbc-js-core Select component was used.
It was next to a native Material-UI Select and looked out of place. The fbc-js-core Select component was replaced with the native Material-UI Select component and all related code has been deleted.
Before

After

Test Plan

I made sure that creating users with the three different roles still works.

I also used the linter to check that no removed code was still in use.

$ yarn eslint .
...

✖ 186 problems (0 errors, 186 warnings)

✨  Done in 20.25s.

[github-actions]

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[github-actions]

feg-workflow

    2 files  202 suites   38s ⏱️
371 tests 371 ✔️ 0 💤 0 ❌
385 runs  385 ✔️ 0 💤 0 ❌

Results for commit a8ac9c2.

♻️ This comment has been updated with latest results.

[github-actions]

nms-workflow

0 files  0 suites   0s ⏱️
0 tests 0 ✔️ 0 💤 0 ❌

Results for commit 943547d.

♻️ This comment has been updated with latest results.

[github-actions]

cloud-workflow

    7 files  356 suites   2m 42s ⏱️
974 tests 974 ✔️ 0 💤 0 ❌

Results for commit a8ac9c2.

♻️ This comment has been updated with latest results.

[github-actions]

agw-workflow

     77 files     122 suites   7m 23s ⏱️
1 158 tests 1 149 ✔️ 9 💤 0 ❌
1 159 runs  1 150 ✔️ 9 💤 0 ❌

Results for commit a8ac9c2.

♻️ This comment has been updated with latest results.

[andreilee]

stamped