Remove skyostil@google.com from OWNERS

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Change-Id: Ie910272288e6b0570343fcea5854e9609f21a731
diff --git a/OWNERS b/OWNERS
index b2a1331..1303764 100644
--- a/OWNERS
+++ b/OWNERS
@@ -4,7 +4,6 @@
 
 # Perfetto tracing internals and API/ABI boundaries.
 primiano@google.com
-skyostil@google.com
 
 # UI, Ftrace interop, traced_probes, protozero, Android internals.