remove explore check - make it possible to load all datasources

public/app/features/explore/Explore.tsx

@@ -159,10 +159,6 @@ export class Explore extends React.PureComponent<ExploreProps, ExploreState> {
       } else {
         datasource = await datasourceSrv.get();
       }
-      // temporarily remove this
-      // if (!datasource.meta.explore) {
-      //   datasource = await datasourceSrv.get(datasources[0].name);
-      // }
       await this.setDatasource(datasource);
     } else {
       this.setState({ datasourceMissing: true });

public/app/features/plugins/datasource_srv.ts

@@ -94,7 +94,6 @@ export class DatasourceSrv {
   getExploreSources() {
     const { datasources } = config;
     const es = Object.keys(datasources).map(name => datasources[name]);
-    // .filter(ds => ds.meta && ds.meta.explore);
     return _.sortBy(es, ['name']);
   }