infra_virtualenv: Update OWNERS

Remove owner no longer on the team.

BUG=None
TEST=None

Change-Id: I0e0a9920db72b7ad7a005615205938818ebe7a4f
diff --git a/OWNERS b/OWNERS
index 74dc8c3..2131ccb 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,4 +1,3 @@
-akeshet@chromium.org
 ayatane@chromium.org
 pprabhu@chromium.org
 xixuan@chromium.org