remove now-unnecessary manual reaps

Git/Command.hs

@@ -93,7 +93,11 @@ pipeNullSplit params repo = do
 pipeNullSplitZombie :: [CommandParam] -> Repo -> IO [String]
 pipeNullSplitZombie params repo = fst <$> pipeNullSplit params repo
 
-{- Reaps any zombie git processes. -}
+{- Reaps any zombie git processes. 
+ -
+ - Warning: Not thread safe. Anything that was expecting to wait
+ - on a process and get back an exit status is going to be confused
+ - if this reap gets there first. -}
 reap :: IO ()
 reap = do
 	-- throws an exception when there are no child processes

Git/HashObject.hs

@@ -39,7 +39,6 @@ hashFile h file = CoProcess.query h send receive
 hashObject :: ObjectType -> String -> Repo -> IO Sha
 hashObject objtype content repo = getSha subcmd $ do
 	s <- pipeWriteRead (map Param params) content repo
-	reap -- XXX unsure why this is needed, of if it is anymore
 	return s
 	where
 		subcmd = "hash-object"