fix(button): remove inner class annotation

PiperOrigin-RevId: 404077053

Author: allan-chen

components/button/lib/_button.scss

@@ -65,6 +65,7 @@
   vertical-align: middle;
   background: transparent;
   text-decoration: none;
+  width: 100%;
 
   &::-moz-focus-inner {
     padding: 0;

components/button/lib/button.ts

@@ -59,7 +59,6 @@ export abstract class Button extends LitElement {
   /**
    * @soyTemplate
    * @soyAttributes buttonAttributes: .md3-button
-   * @soyClasses buttonClasses: .md3-button
    */
   protected override render(): TemplateResult {
     // TODO(b/182405623): restore whitespace

components/button/lib/link-button.ts

@@ -22,7 +22,6 @@ export abstract class LinkButton extends Button {
   /**
    * @soyTemplate
    * @soyAttributes buttonAttributes: .md3-button
-   * @soyClasses buttonClasses: .md3-button
    */
   protected override render(): TemplateResult {
     // TODO(b/182405623): restore whitespace