Update comment to reference is´╗┐sue 109878533

Change-Id: Ice7517a274b6d974d84ba82b5b3eaab6685f89b1
diff --git a/.gitmodules b/.gitmodules
index 2f15b27..97336fd 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1 +1 @@
-# Android Studio: submodules removed by Change Ic4993379
+# submodules removed: b/109878533