Removed dead code from NodeGuards

src/node/NodeGuards.ts

@@ -90,14 +90,6 @@ export class NodeGuards {
         return node.type === NodeType.ClassDeclaration && node.id !== null;
     }
 
-    /**
-     * @param {Node} node
-     * @returns {boolean}
-     */
-    public static isConditionalExpressionNode (node: ESTree.Node): node is ESTree.ConditionalExpression {
-        return node.type === NodeType.ConditionalExpression;
-    }
-
     /**
      * @param {Node} node
      * @returns {boolean}
@@ -366,14 +358,6 @@ export class NodeGuards {
         return node.type === NodeType.ReturnStatement;
     }
 
-    /**
-     * @param {Node} node
-     * @returns {boolean}
-     */
-    public static isSequenceExpressionNode (node: ESTree.Node): node is ESTree.SequenceExpression {
-        return node.type === NodeType.SequenceExpression;
-    }
-
     /**
      * @param {Node} node
      * @returns {boolean}