simplify, remove dead code

Ledger/Amount.hs

@@ -45,7 +45,6 @@ import Ledger.Commodity
 
 
 instance Show Amount where show = showAmount
--- instance Show MixedAmount where show = showMixedAmount
 
 instance Num Amount where
     abs (Amount c q) = Amount c (abs q)
@@ -98,11 +97,11 @@ punctuatethousands s =
       triples [] = []
       triples l  = [take 3 l] ++ (triples $ drop 3 l)
 
--- | Get the string representation of an amount, rounded, or showing just "0" if it's zero.
-showAmountOrZero :: Amount -> String
-showAmountOrZero a
-    | isZeroAmount a = "0"
-    | otherwise = showAmount a
+-- -- | Get the string representation of an amount, rounded, or showing just "0" if it's zero.
+-- showAmountOrZero :: Amount -> String
+-- showAmountOrZero a
+--     | isZeroAmount a = "0"
+--     | otherwise = showAmount a
 
 -- | Get the string representation of an amount, rounded, or showing just "0" if it's zero.
 showMixedAmountOrZero :: MixedAmount -> String

Ledger/Entry.hs

@@ -60,10 +60,8 @@ showEntry e =
 showDate = printf "%-10s"
 
 isEntryBalanced :: Entry -> Bool
-isEntryBalanced (Entry {etransactions=ts}) = isZeroMixedAmount sum
-    where
-      sum = sumRawTransactions realts
-      realts = filter isReal ts
+isEntryBalanced (Entry {etransactions=ts}) = 
+    isZeroMixedAmount $ sumMixedAmounts $ map tamount $ filter isReal ts
 
 -- | Fill in a missing balance in this entry, if we have enough
 -- information to do that. Excluding virtual transactions, there should be
@@ -76,10 +74,7 @@ balanceEntry e@(Entry{etransactions=ts}) = e{etransactions=ts'}
               0 -> ts
               1 -> map balance ts
               otherwise -> error $ "could not balance this entry, too many missing amounts:\n" ++ show e
-      otherstotal = sumRawTransactions withamounts
---       simpleotherstotal
---           | length otherstotal == 1 = head otherstotal
---           | otherwise = error $ "sorry, can't balance a mixed-commodity entry yet:\n" ++ show e
+      otherstotal = sumMixedAmounts $ map tamount withamounts
       balance t
           | isReal t && not (hasAmount t) = t{tamount = -otherstotal}
           | otherwise = t

Ledger/RawTransaction.hs

@@ -31,6 +31,3 @@ isReal t = rttype t == RegularTransaction
 
 hasAmount :: RawTransaction -> Bool
 hasAmount = (/= autoamt) . tamount
-
-sumRawTransactions :: [RawTransaction] -> MixedAmount
-sumRawTransactions = normaliseMixedAmount . sumMixedAmounts . map tamount