avoid unncessary locking by checkLogFile

Like the comment says, this works without locking. It looks like I
originally copied another function and forgot to remove the locking.

Sponsored-by: Dartmouth College's DANDI project

Command/Move.hs

@@ -396,8 +396,7 @@ logMove srcuuid destuuid deststartedwithcopy key a = go =<< setup
 	go logf
 		-- Only need to check log when there is a copy.
 		| deststartedwithcopy = do
-			lck <- fromRepo gitAnnexMoveLock
-			wasnocopy <- checkLogFile (fromRawFilePath logf) lck
+			wasnocopy <- checkLogFile (fromRawFilePath logf)
 				(== logline)
 			if wasnocopy
 				then go' logf False

Logs/File.hs

@@ -88,8 +88,8 @@ modifyLogFile f lck modf = withExclusiveLock lck $ do
 -- action is concurrently modifying the file. It does not lock the file,
 -- for speed, but instead relies on the fact that a log file usually
 -- ends in a newline.
-checkLogFile :: FilePath -> RawFilePath -> (L.ByteString -> Bool) -> Annex Bool
-checkLogFile f lck matchf = withExclusiveLock lck $ bracket setup cleanup go
+checkLogFile :: FilePath -> (L.ByteString -> Bool) -> Annex Bool
+checkLogFile f matchf = bracket setup cleanup go
   where
 	setup = liftIO $ tryWhenExists $ openFile f ReadMode
 	cleanup Nothing = noop