Update git submodules

* Update plugins/gitiles from branch 'stable-3.0'
  to f69151035e10437409549fb1ca92b7403b90fc2f
  - Bazel: Remove unused gitiles__classpath_deps rule
    
    Change-Id: I5840a9f45721bf36f76352c46ec37aa6af675a10
    
diff --git a/plugins/gitiles b/plugins/gitiles
index 2523fc1..f691510 160000
--- a/plugins/gitiles
+++ b/plugins/gitiles
@@ -1 +1 @@
-Subproject commit 2523fc1c0bb7b4f6454e7c5aff2bdd5a8ccad18f
+Subproject commit f69151035e10437409549fb1ca92b7403b90fc2f