revert(v-toolbar): partially revert #4664
revert(v-toolbar): partially revert #4664

the important is not needed and blocks the user from removing it

vuetifyjs/vuetify,vuetifyjs/vuetify,vuetifyjs/vuetify,Phlow2001/vuetify,vuetifyjs/vuetify,Phlow2001/vuetify,Phlow2001/vuetify,Webifi/vuetify,Phlow2001/vuetify,Webifi/vuetify,Webifi/vuetify