refactor a sqlbuilder usage

entity/ClassificationAdmin_entity/grantDeleteProcess.js

@@ -6,9 +6,6 @@ import("Sql_lib");
 var count = newSelect("count(*)")
                 .from("CLASSIFICATION")
                 .whereIfSet("CLASSIFICATION.CLASSIFICATIONTYPE_ID", "$field.CLASSIFICATIONTYPEID")
-                .cell(true);
-                
-if (!count)
-    count = 0;
+                .cell(true, "0");
 
 result.object(parseInt(count) <= 0);
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