cmd/dist: mark linux/sparc64 as a broken port, remove incomplete map
The linux/sparc64 port is incomplete—it doesn't work, and it doesn't
have a builder. Now that dist supports broken ports, mark it as such.
The incomplete map was created to hide ports that aren't functional
from dist list output. Now that we have the broken port concept, it
seems largely redundant, so remove it for now.
For #56679.
Updates #28944.
Change-Id: I34bd23e913ed6d786a4d0aa8d2852f2b926fe4b6
Reviewed-on: https://go-review.googlesource.com/c/go/+/458516
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org> Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>