remove duplicate error message

dashboard/src/components/app/Repair.vue

@@ -65,7 +65,6 @@ onMounted(() => {
       <label>{{ $t('app.repair.restart.title') }}</label>
       <div>{{ $t('app.repair.restart.description') }}</div>
       <br/>
-      <div v-if="app.error">An error occurred during the <b>{{ taskNameFromInstallationState(app.error.details.installationState) }}</b> operation: <span class="text-danger"><b>{{ app.error.reason + ': ' + app.error.message }}</b></span></div>
       <Button @click="onRestart()" :disabled="busyRestart || app.taskId || !!app.error" :loading="busyRestart || app.installationState === 'pending_restart'">{{ $t('app.repair.recovery.restartAction') }}</Button>
     </div>
     <hr style="margin-top: 20px"/>