Remove ErrorTest80 call from ParserErrorsTests as requested

Co-authored-by: llali <17187348+llali@users.noreply.github.com>

Author: Copilot

Test/SqlDom/ParserErrorsTests.cs

@@ -4406,8 +4406,6 @@ public void CreateJsonIndexStatementErrorTest()
                 new ParserErrorInfo(7, "SQL46010", "JSON"));
             ParserTestUtils.ErrorTest110("CREATE JSON INDEX idx1 ON table1 (jsonColumn)",
                 new ParserErrorInfo(7, "SQL46010", "JSON"));
-            ParserTestUtils.ErrorTest80("CREATE JSON INDEX idx1 ON table1 (jsonColumn)",
-                new ParserErrorInfo(7, "SQL46010", "JSON"));
 
             // JSON Index with FOR clause in older versions
             ParserTestUtils.ErrorTest160("CREATE JSON INDEX idx1 ON table1 (jsonColumn) FOR ('$.name')",