Ship maximised widgets and remove feature flag (#7509)

Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>

src/components/views/elements/AppTile.tsx

@@ -542,7 +542,7 @@ export default class AppTile extends React.Component<IProps, IState> {
             );
         }
         let maxMinButton;
-        if (SettingsStore.getValue("feature_maximised_widgets") && !this.props.hideMaximiseButton) {
+        if (!this.props.hideMaximiseButton) {
             const widgetIsMaximised = WidgetLayoutStore.instance.
                 isInContainer(this.props.room, this.props.app, Container.Center);
             maxMinButton = <AccessibleButton