Removing inactive reviewer

David Cobbley is no longer involved with phosphor-network reviews.

Change-Id: I0bde3b4c541421905cccc7b8a6ac067508517663
Signed-off-by: Johnathan Mantey <johnathanx.mantey@intel.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 8776dd2..b16769a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -46,4 +46,3 @@
 M:  William Kennington <wak@google.com> <wak-work!>
 R:  Adriana Kobylak <anoo@us.ibm.com> <anoo!>
 R:  Nagaraju Goruganti <ngorugan@in.ibm.com>
-R:  Dave Cobbley <david.j.cobbley@linux.intel.com>