Previously, distpack filtered out tools from the packaged distribution
using a list of tools to remove. Instead follow mpratt's suggestion on
CL 666755 and instead filter out tools that are not on a list of tools
to keep. This will make it easier to tell which tools are actually in
the distribution.
For #71867
Change-Id: I8336465703ac820028c3381a0a743c457997e78a
Reviewed-on: https://go-review.googlesource.com/c/go/+/673696
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Michael Pratt <mpratt@google.com> Reviewed-by: Michael Matloob <matloob@google.com>