Eliminated extra optional () in insert clause. Code reviewed by Mike.

git-svn-id: https://asterixdb.googlecode.com/svn/branches/asterix_lsm_stabilization@1468 eaa15691-b419-025a-1212-ee371bd00084
diff --git a/asterix-aql/src/main/javacc/AQL.jj b/asterix-aql/src/main/javacc/AQL.jj
index 5ede3ac..8e3e203 100644
--- a/asterix-aql/src/main/javacc/AQL.jj
+++ b/asterix-aql/src/main/javacc/AQL.jj
@@ -260,7 +260,7 @@
     datasetName = nameComponents.second;
    }
     
-    (<LEFTPAREN>)? query = Query() (<RIGHTPAREN>)? (";")?
+    query = Query() (";")?
    {return new InsertStatement(dataverseName, datasetName, query,  getVarCounter());}
 }