small refactoring

Summary: left over from previous iteration in D63238392

Reviewed By: malanka

Differential Revision: D63382969

fbshipit-source-id: 579c8a77d0adb0e2776c410b696a0a2a19c59eae

glean/glass/Glean/Glass/Handler.hs

@@ -924,9 +924,8 @@ fetchDocumentSymbols
 fetchDocumentSymbols env@Glass.Env{..} (FileReference scsrepo path)
     repoPath mlimit wantedRevision
     exactRevision includeRefs includeXlangRefs fetchContentHash
-    b mlang dbInfo =
-  do
-  (docSyms, queryLog, logger) <- backendRunHaxl b env $ do
+    b mlang dbInfo = do
+  backendRunHaxl b env $ do
     --
     -- we pick the first db in the list that has the full FileInfo{..}
     -- and in exact_revision mode the rev also has to match precisely
@@ -1013,8 +1012,6 @@ fetchDocumentSymbols [email protected]{..} (FileReference scsrepo path)
         return (DocumentSymbols { srcFile = Just srcFile, .. },
                 gleanDataLog, merr)
 
-  return (docSyms, queryLog, logger)
-
   where
     revisionAcceptable :: Glean.Repo -> Bool
     revisionAcceptable = case wantedRevision of