Delete service.token file

This file is not used anywhere in contrail.
It should be removed from the system.

Change-Id: I704d8186cd932d9d6882e6d44004a7b4001cf20c
Related-Prod: PROD-22090
diff --git a/opencontrail/common.sls b/opencontrail/common.sls
index 7628815..e46e824 100644
--- a/opencontrail/common.sls
+++ b/opencontrail/common.sls
@@ -99,12 +99,6 @@
   file.directory
 
 {%- if common.identity.engine == "keystone" %}
-/etc/contrail/service.token:
-  file.managed:
-  - contents: "{{ common.identity.token }}"
-  - require:
-    - file: /etc/contrail
-
 /etc/contrail/ctrl-details:
   file.managed:
   - source: salt://opencontrail/files/{{ common.version }}/ctrl-details