Remove reference to SoftButtonManager's removed update method

Author: renonick87

lib/js/src/manager/screen/_ScreenManagerBase.js

@@ -545,11 +545,10 @@ class _ScreenManagerBase extends _SubManagerBase {
     async commit () {
         this._softButtonManager.setBatchUpdates(false);
         this._textAndGraphicManager.setBatchUpdates(false);
-        // order matters!
-        const success1 = await this._softButtonManager.update();
-        const success2 = await this._textAndGraphicManager.update();
 
-        return success1 && success2;
+        const success = await this._textAndGraphicManager.update();
+
+        return success;
     }
 
     /**