temp remove until stackdriver implements explore

public/app/features/explore/Explore.tsx

@@ -168,9 +168,10 @@ export class Explore extends React.PureComponent<ExploreProps, ExploreState> {
       } else {
         datasource = await datasourceSrv.get();
       }
-      if (!datasource.meta.explore) {
-        datasource = await datasourceSrv.get(datasources[0].name);
-      }
+      // temporarily remove this
+      // if (!datasource.meta.explore) {
+      //   datasource = await datasourceSrv.get(datasources[0].name);
+      // }
       await this.setDatasource(datasource);
     } else {
       this.setState({ datasourceMissing: true });