rust: clear the collect coverage attribute

Collecting coverage for generated sources is generally not intended.

PiperOrigin-RevId: 877328988

rust/bazel/aspects.bzl

diff --git a/rust/bazel/aspects.bzl b/rust/bazel/aspects.bzl
index e3420e3..0ac125a 100644
--- a/rust/bazel/aspects.bzl
+++ b/rust/bazel/aspects.bzl
@@ -499,11 +499,6 @@
         attr_aspects = ["deps", "exports"],
         requires = ([] if is_upb else [cc_proto_aspect]),
         attrs = {
-            "_collect_cc_coverage": attr.label(
-                default = Label("@rules_rust//util:collect_coverage"),
-                executable = True,
-                cfg = "exec",
-            ),
             "_cpp_thunks_deps": attr.label_list(
                 default = [
                     Label("//rust/cpp_kernel:cpp_api"),