remove vpalatin from OWNERS

An update on the OWNERS file:
remove vpalatin from the owners of modemmanager related projects.

BUG=None
TEST=None

Change-Id: Iccc0b3dd4df154ab0574163ac7fcfe828ce4e11f
diff --git a/OWNERS b/OWNERS
index 131ce16..9df7ded 100644
--- a/OWNERS
+++ b/OWNERS
@@ -3,4 +3,3 @@
 pholla@chromium.org
 andrewlassalle@chromium.org
 madhavadas@google.com
-vpalatin@chromium.org