Remove unnecessary savebutton vue component and create SaveButton Macro

js/mixins/form.js

@@ -1,5 +1,3 @@
-import savebutton from '../components/save_button'
-
 export default {
   mounted: function() {
     this.$root.$on('field-change', this.handleFieldChange)
@@ -29,8 +27,4 @@ export default {
       default: true,
     },
   },
-
-  components: {
-    savebutton,
-  },
 }