Remove `brotli` support for chunk uploads

[szokeasaurusrex]

We currently use gzip compression for chunk uploads. It appears that brotli compression is a legacy compression method.

Let's verify this assumption, and if correct, remove brotli support.

[linear]

CLI-174 Remove `brotli` support for chunk uploads

[szokeasaurusrex]

As far as I can tell, the server never supported brotli compression, so I am unsure why we added it