Update git submodules

* Update prebuilts/rust from branch 'master'
  to 4ef42395a180d4f3bd1f1eeb26067ff845eec0c9
  - Revert "Make `rustfmt` available for other modules"
    
    Revert submission 2079623-pdl-rustfmt
    
    Reason for revert: b/232531894 - broken build
    Reverted Changes:
    Icba16d7a5:Remove unnecessary ‘rustfmt’ symlink
    I4d08a8fd7:Make `rustfmt` available for other modules
    
    Change-Id: Ie92a74d42a65ae280329ae33687531fc76a6ce84
    
diff --git a/prebuilts/rust b/prebuilts/rust
index 3cebe01..4ef4239 160000
--- a/prebuilts/rust
+++ b/prebuilts/rust
@@ -1 +1 @@
-Subproject commit 3cebe0166d7ae8445e80fecb3fb6985cbe9d5482
+Subproject commit 4ef42395a180d4f3bd1f1eeb26067ff845eec0c9