Remove d3 ignore

Created by: nicksnyder

Remove an ignore directive that is no longer needed.

This ignore configuration was added in https://github.com/sourcegraph/sourcegraph/pull/20267 as a result of this issue which was fixed in babel/parser 7.14.9.

We already started locking to babel/parser 7.18.0 (which is > 7.14.9), so this exclude should no longer be necessary. https://sourcegraph.sourcegraph.com/github.com/sourcegraph/sourcegraph@main/-/blob/yarn.lock?L417-420

Test plan

All existing tests pass

App preview:

• Web
• Storybook

Check out the client app preview documentation to learn more.