tmp! Remove indices.snapshot_index stuff from REST

I believe this has been broken since Elasticsearch 1.0

Relevant links:
- <http://web.archive.org/web/20130227064817/http://www.elasticsearch.org/guide/reference/api/admin-indices-gateway-snapshot.html>
- <elastic/elasticsearch#5422>

Author: Josh Tilles

src/clojurewerkz/elastisch/rest.clj

@@ -199,10 +199,6 @@
   [conn ^String index-name]
   (url-with-path conn index-name "_close"))
 
-(defn index-snapshot-url
-  [conn ^String index-name]
-  (url-with-path conn index-name "_gateway/snapshot"))
-
 (defn index-mget-url
   ([conn]
      (url-with-path conn "_mget"))

src/clojurewerkz/elastisch/rest/index.clj

@@ -171,14 +171,6 @@
   (rest/post conn (rest/index-close-url conn
                                         (join-names index-name))))
 
-(defn snapshot
-  "Takes a snapshot of an index or multiple indexes.
-
-  API Reference: <http://www.elasticsearch.org/guide/reference/api/admin-indices-gateway-snapshot.html>"
-  [^Connection conn index-name]
-  (rest/post conn (rest/index-snapshot-url conn
-                                           index-name)))
-
 (defn refresh
   "Refreshes an index or multiple indices manually.