Brotli support removed

[Francois-Francois]

What problem does this feature solve?

In the past, Brotli was not supported on nodejs servers.

If I understand correctly, this is now supported since a few months : nodejs/node#20458

This PR dropped support for Brotli : #180

Maybe it's time to revert this BR because Axios is supporting it too : axios/axios#2071

What does the proposed changes look like?

Revert this PR #180

_{This feature request is available on Nuxt community (#c270)}

[manniL]

Reverting isn't enough as Brotli isn't supported in all version. One would have to do a check like in axios/axios#2071

Other than that, I absolutely agree.

[pi0]

Thanks @rikless for report.

[ITJesse]

As the axios is not support brotli now, you should drop server side Brotli support at this time.

[ITJesse]

I recommend revet this commit:
074f98c