chromium: delete unused paths in source tarball

to stay below hydra limit.

At the time of writing, the hydra.nixos.org's output limit is 3 GB.
The latest chromium tarball, however, is slightly above that.

To work around this, recompress the original `tar.xz` into a `tar.zstd`
and delete two unreasonably big and unused directories.

Bringing it down to roughtly 2.2 GB.

Unfortunately, this change breaks the `update.py` script.

Resolves the current channel-blocker.

0 files changed, 0 insertions, 0 deletions