rust: Rust is now GA for platform usage

Rust is now approved for general platform use without project-specific
review.

Bug: 240501326
Test: m
Change-Id: I6fd4c22ba2c6a3a5bac6f91fd087fe5cffe46c01

rust/rust.go

@@ -33,13 +33,6 @@ import (
 var pctx = android.NewPackageContext("android/soong/rust")
 
 func init() {
-	// Only allow rust modules to be defined for certain projects
-
-	android.AddNeverAllowRules(
-		android.NeverAllow().
-			NotIn(append(config.RustAllowedPaths, config.DownstreamRustAllowedPaths...)...).
-			ModuleType(config.RustModuleTypes...))
-
 	android.RegisterModuleType("rust_defaults", defaultsFactory)
 	android.PreDepsMutators(func(ctx android.RegisterMutatorsContext) {
 		ctx.BottomUp("rust_libraries", LibraryMutator).Parallel()