remove redundant index for primary key in config table
diff --git a/common/src/main/java/com/metamx/druid/db/DbConnector.java b/common/src/main/java/com/metamx/druid/db/DbConnector.java
index f3c4c1f..73013ce 100644
--- a/common/src/main/java/com/metamx/druid/db/DbConnector.java
+++ b/common/src/main/java/com/metamx/druid/db/DbConnector.java
@@ -65,7 +65,7 @@
         dbi,
         configTableName,
         String.format(
-            "CREATE table %s (name VARCHAR(255) NOT NULL, payload LONGTEXT NOT NULL, INDEX(name), PRIMARY KEY(name))",
+            "CREATE table %s (name VARCHAR(255) NOT NULL, payload LONGTEXT NOT NULL, PRIMARY KEY(name))",
             configTableName
         )
     );