remove term_vector and fielddata from pod.analyzed

As far as I can tell, these are unused. These fields are using the
string type, which will be automatically be converted to text or keyword
types. With term_vector and fielddata, this automatic conversion can't
be done. Removing them allow the same mapping to work on both
Elasticsearch 2.4 and 5.

lib/MetaCPAN/Script/Mapping/CPAN/File.pm

@@ -210,10 +210,7 @@ sub mapping {
             "fields" : {
               "analyzed" : {
                 "type" : "string",
-                "term_vector" : "with_positions_offsets",
-                "fielddata" : {
-                  "format" : "disabled"
-                },
+                "index" : "analyzed",
                 "analyzer" : "standard"
               }
             }