Exempt MODULE.bazel from Library-Compliance requirement

Gerrit’s external Maven dependencies relevant for Library-Compliance are
now declared through the rules_jvm_external TOML input tools/deps.toml
and wired from tools/java_deps.MODULE.bazel.

tools/deps.toml already requires Library-Compliance approval. It is the
authoritative place for third-party library coordinates and versions
that are relevant for Google.

The root MODULE.bazel mostly declares Bazel modules and build rules,
such as rules_java, rules_nodejs, rules_jvm_external, and local module
wiring. These Bazel module dependencies are not the library dependencies
consumed by Google, and requiring Library-Compliance approval for every
MODULE.bazel change creates unnecessary review friction.

Keep Library-Compliance focused on the files that actually define
relevant external library metadata.

As part of this cleanup, also remove the obsolete maven_install.json
entry from the submit requirement. It was left over from the bzlmod
migration, and the file no longer exists.

Change-Id: I698df8ef0df5566af6d426db01f9bd15da89fda1
diff --git a/project.config b/project.config
index 41f5e5c..7d6b6c0 100644
--- a/project.config
+++ b/project.config
@@ -131,7 +131,7 @@
 	canOverrideInChildProjects = false
 [submit-requirement "Library-Compliance"]
 	description = Changes to specific library/metadata files require additional approval
-	applicableIf = -branch:refs/meta/config AND (file:\"^lib/.*\" OR file:\"^WORKSPACE.*$\" OR file:\"^MODULE.bazel$\" OR file:\"^.gitmodule$\" OR file:\"^tools/deps.toml$\" OR file:\"^maven_install.json$\")
+	applicableIf = -branch:refs/meta/config AND (file:\"^lib/.*\" OR file:\"^WORKSPACE.*$\" OR file:\"^.gitmodule$\" OR file:\"^tools/deps.toml$\")
 	submittableIf = label:Library-Compliance=MAX AND -label:Library-Compliance=MIN
 	canOverrideInChildProjects = false
 [submit-requirement "Release-Notes"]