Remove unused variable

Author: alcaeus

src/libmongoc/src/mongoc/mongoc-cursor-legacy.c

@@ -92,14 +92,11 @@ _mongoc_cursor_monitor_legacy_query (mongoc_cursor_t *cursor,
                                      mongoc_server_stream_t *server_stream)
 {
    bson_t doc;
-   mongoc_client_t *client;
    char *db;
    bool r;
 
    ENTRY;
 
-   client = cursor->client;
-
    bson_init (&doc);
    db = bson_strndup (cursor->ns, cursor->dblen);