remove homebrew instructions

[christopherfujino]

This removes the instructions added in https://github.com/flutter/website/pull/6124/files. The validity of this cask is uncertain, so we should not be officially recommending it unless its security has been vetted.

[christopherfujino]

cc @jmagman

[jmagman]

LGTM

[zanderso]

lgtm

[nathanfallet]

I know a lot of developers working on macOS (including me) prefer to install things using Homebrew (like it can be done with package managers on many linux distributions) to make it simpler and quicker, and allow to update automatically. That's why I opened #6124

[christopherfujino]

I know a lot of developers working on macOS (including me) prefer to install things using Homebrew (like it can be done with package managers on many linux distributions) to make it simpler and quicker, and allow to update automatically. That's why I opened #6124

This was removed from the website not because homebrew isn't useful, but because we hadn't vetted that flutter homebrew package for validity and security.

[Hixie]

If you would like to help us support homebrew officially, please volunteer on Discord to help us fix flutter/flutter#14050. A solution here would need to be secure and verified so that we know we're not shipping the actual Flutter binaries to people, rather than, as with an unofficial package, having the risk that the package is being manipulated by whoever is setting it up. (Not that I have any reason to believe that that is happening, but I certainly would want to be sure before telling people to use it.) Setting this up will probably require learning how our CI works and working with our infra team to figure out how to do this securely.