Remove invalid 'w:shdCs' element

src/file/paragraph/run/formatting.ts

@@ -200,15 +200,3 @@ export class Shading extends XmlComponent {
     }
 }
 
-export class ShadowComplexScript extends XmlComponent {
-    constructor(value: string, fill: string, color: string) {
-        super("w:shdCs");
-        this.root.push(
-            new Attributes({
-                val: value,
-                fill: fill,
-                color: color,
-            }),
-        );
-    }
-}