[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

intake_esm/core.py

@@ -421,7 +421,7 @@ def search(
         if derivedcat_results:
             # Merge results from the main and the derived catalogs
             esmcat_results = pd.concat([esmcat_results, *derivedcat_results])
-            esmcat_results = (esmcat_results[~esmcat_results.astype(str).duplicated()])
+            esmcat_results = esmcat_results[~esmcat_results.astype(str).duplicated()]
 
         cat = self.__class__({'esmcat': self.esmcat.dict(), 'df': esmcat_results})
         cat.esmcat.catalog_file = None  # Don't save the catalog file