Remove CC license headers from individual specs / use cases

These are unnecessary because they are already covered by the
top-level LICENSE file.

Change-Id: I98145df081c03ce5cfa0ecfbf5133f9d658cc126

specs/template.rst

@@ -1,8 +1,3 @@
-..
-
-This work is licensed under a Creative Commons Attribution 3.0 Unported License.
-http://creativecommons.org/licenses/by/3.0/legalcode
-
 ..
   This template is intended to encourage a certain level of consistency
   between different use cases.  However strict adherence to the structure

use-cases/heat-mistral-aodh.rst

@@ -1,8 +1,3 @@
-..
- This work is licensed under a Creative Commons Attribution 3.0 Unported License.
-
- http://creativecommons.org/licenses/by/3.0/legalcode
-
 =============================================================
 Self-healing and auto-scaling with Heat, Mistral, Zaqar, Aodh
 =============================================================

use-cases/memory-leak.rst

@@ -1,8 +1,3 @@
-..
-
-This work is licensed under a Creative Commons Attribution 3.0 Unported License.
-http://creativecommons.org/licenses/by/3.0/legalcode
-
 =============================================
 Memory leak mitigation and failure prevention
 =============================================

use-cases/nic-failure-affects-instance-and-app.rst

@@ -1,9 +1,3 @@
-..
- This work is licensed under a Creative Commons Attribution 3.0 Unported
- License.
-
- http://creativecommons.org/licenses/by/3.0/legalcode
-
 ==============================================
 NIC failure affects instances and applications
 ==============================================

use-cases/template.rst

@@ -1,8 +1,3 @@
-..
-
-This work is licensed under a Creative Commons Attribution 3.0 Unported License.
-http://creativecommons.org/licenses/by/3.0/legalcode
-
 ..
   This template is intended to encourage a certain level of consistency
   between different use cases.  However strict adherence to the structure