Removing dhcp app from the office cell because incompatible with local dhcp server.

Change-Id: I2e5742f3b7637e6ae185eacde1b7af0d55b997ae
diff --git a/tools/test/cells/office b/tools/test/cells/office
index c8dc599..906694d 100644
--- a/tools/test/cells/office
+++ b/tools/test/cells/office
@@ -4,5 +4,4 @@
 export OC1="10.1.10.223"
 
 unset ONOS_USE_SSH
-export ONOS_APPS="drivers,openflow,fwd,proxyarp,mobility,dhcp"
-
+export ONOS_APPS="drivers,openflow,fwd,proxyarp,mobility"