message: [gbc] Remove redundant import
diff: @@ -25,7 +25,6 @@ import Data.Int (Int64)
  import Data.List (sortOn)
  import Data.Monoid
  import Prelude
  -import Data.List
  import Data.Text.Lazy (Text, unpack)
  import Data.Text.Lazy.Builder (toLazyText)
  import Text.Shakespeare.Text
  