移除掉资源判断条件

src/views/accompaniment/index.vue

@@ -258,7 +258,7 @@
               "
               >预览</el-button
             > -->
-            <el-dropdown :disabled="(scope.row.isOpenMetronome ? !scope.row.url : !scope.row.metronomeUrl) || scope.row.clientType != 'SMART_PRACTICE'">
+            <el-dropdown :disabled="scope.row.clientType != 'SMART_PRACTICE'">
                 <span class="el-dropdown-link">
                   预览<i class="el-icon-arrow-down el-icon--right"></i>
                 </span>