Remove SqlSyntax.FUNCTION_STAR from AVG and SUM functions

Author: zabetak

ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/functions/HiveSqlAverageAggFunction.java

@@ -52,9 +52,4 @@ public <T> T unwrap(Class<T> clazz) {
     }
     return super.unwrap(clazz);
   }
-
-  @Override
-  public SqlSyntax getSyntax() {
-    return SqlSyntax.FUNCTION_STAR;
-  }
 }

ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/functions/HiveSqlSumAggFunction.java

@@ -130,11 +130,6 @@ public AggregateCall topSplit(RexBuilder rexBuilder,
     }
   }
 
-  @Override
-  public SqlSyntax getSyntax() {
-    return SqlSyntax.FUNCTION_STAR;
-  }
-
   @Override
   public SqlAggFunction getRollup() {
     return this;