Remove Cinder policy.json install

Cinder has now implemented "policy in code" and policy.json is
only needed for overriding default policies. The default policy.json
file has been removed in Cinder so we need to stop trying to copy
it during Cinder setup.

Change-Id: I364e401227fe43e2bacf8a799e10286ee445f835
diff --git a/lib/cinder b/lib/cinder
index 07f82a1..01686f7 100644
--- a/lib/cinder
+++ b/lib/cinder
@@ -206,8 +206,6 @@
 function configure_cinder {
     sudo install -d -o $STACK_USER -m 755 $CINDER_CONF_DIR
 
-    cp -p $CINDER_DIR/etc/cinder/policy.json $CINDER_CONF_DIR
-
     rm -f $CINDER_CONF
 
     configure_rootwrap cinder