[#75] Remove unused code

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

alphabet/alphabet_contract.go

@@ -105,10 +105,6 @@ func index(ctx storage.Context) int {
 	return storage.Get(ctx, indexKey).(int)
 }
 
-func total(ctx storage.Context) int {
-	return storage.Get(ctx, totalKey).(int)
-}
-
 func checkPermission(ir []common.IRNode) bool {
 	ctx := storage.GetReadOnlyContext()
 	index := index(ctx) // read from contract memory

balance/balance_contract.go

@@ -43,12 +43,7 @@ const (
 	notaryDisabledKey    = "notary"
 )
 
-var (
-	lockTransferMsg   = []byte("lock assets to withdraw")
-	unlockTransferMsg = []byte("asset lock expired")
-
-	token Token
-)
+var token Token
 
 // CreateToken initializes the Token Interface for the Smart Contract to operate with.
 func CreateToken() Token {