Clean up multiselect pattern token cascade

styles/01-foundations.css

@@ -79,7 +79,6 @@
   --layout-pulldown-chevron-offset: var(--compact-interaction-padding-horizontal);
   --layout-tab-navigation-large-padding-inline: var(--interaction-padding-horizontal);
   --layout-pulldown-chevron-reserved-space: var(--spacing-large);
-  --layout-pulldown-panel-form-mobile-width: 90%;
   --layer-pulldown-panel: var(--dimension-layer-pulldown-panel);
   --layout-multiselect-pulldown-panel-desktop-width: var(--dimension-multiselect-pulldown-panel-desktop-width);
   --layout-input-label-width: var(--dimension-input-label-width);