支持Spring和ibatis

git-svn-id: http://code.alibabatech.com/svn/druid/trunk@426 b9813039-fb51-4c41-a8b9-e21c2acb5095

src/main/java/com/alibaba/druid/pool/PoolableConnection.java

@@ -104,10 +104,6 @@ public class PoolableConnection implements PooledConnection, Connection {
         this.holder.getStatementPool().put(stmt);
     }
 
-    public Connection getRawConnection() {
-        return conn;
-    }
-
     public ConnectionHolder getConnectionHolder() {
         return holder;
     }