Drop redundant no-arg constructors flagged by Codacy

Each inner class declared an empty public no-arg constructor as its only
constructor, which is redundant — the compiler generates an equivalent default
constructor (Codacy PMD UnnecessaryConstructor). Removed both; the grammar and
tests that instantiate them with `new ...Clause()` are unaffected. Verified
locally: full build + XmlTableTest pass on JDK 17; javap confirms the default
constructor is still synthesized.

Refs #2326

Signed-off-by: 付典 <fudianchn@gmail.com>

Author: fudianchn

src/main/java/net/sf/jsqlparser/expression/XmlTableFunction.java

@@ -42,8 +42,6 @@ public static class XmlTablePassingClause extends ASTNodeAccessImpl implements S
         private Expression valueExpression;
         private String name;
 
-        public XmlTablePassingClause() {}
-
         public Expression getValueExpression() {
             return valueExpression;
         }
@@ -81,8 +79,6 @@ public static class XmlTableColumnDefinition extends ASTNodeAccessImpl implement
         private Expression pathExpression;
         private Expression defaultExpression;
 
-        public XmlTableColumnDefinition() {}
-
         public String getColumnName() {
             return columnName;
         }