Update just-import-cargo, update just dependencies, and clean up

- With the new naming convention of just-import-cargo, there is no
  longer the conflict on the file etc/defulta/rust/TARGETS.
- With the new version of the upstream rust rules, we can use the
  defaults target directly, as it fully honors TOOLCHAIN_CONFIG[RUST].
- With that simplification in place, we don't have to point
  just-import-cargo to rules-rust anymore, as for the default-imported
  rules, the TOOLCHAIN_CONFIG is honored as well.

1 files changed, 0 insertions, 3 deletions

diff --git a/etc/defaults/rust/TARGETS b/etc/defaults/rust/TARGETS
deleted file mode 100644
index fe4de0a..0000000
--- a/etc/defaults/rust/TARGETS
+++ /dev/null
@@ -1,3 +0,0 @@
-{ "defaults":
-  {"type": "defaults", "base": [["@", "orig-rules", "rust", "defaults"]]}
-}