Tweak libcore OWNERS.

Bring it more up to date with current reality.

Test: Treehugger
Change-Id: Ie496fd02c292bef620857da681c9e3636f4e0124
diff --git a/OWNERS b/OWNERS
index 3fa4630..5de8fc6 100644
--- a/OWNERS
+++ b/OWNERS
@@ -6,7 +6,6 @@
 # People who can approve changes for submission; don't send review emails to them
 # unless you know what you're doing.
 dauletz@google.com
-narayan@google.com
 nfuller@google.com
 nikitai@google.com
 paulduffin@google.com
@@ -15,7 +14,7 @@
 vichang@google.com
 
 # Don't send these folks any review emails for this project.
+narayan@google.com
 ngeoffray@google.com
 sehr@google.com
 vmarko@google.com
-dbrazdil@google.com