Fix benchmarks build

bench/Copar/Coalgebra/BenchParser.hs

@@ -13,7 +13,7 @@ import           Data.Text (Text)
 import           Control.DeepSeq
 
 import           Copar.Coalgebra.Parser
-import           Copar.Coalgebra.RefinementTypes
+import           Copar.RefinementInterface
 import           Copar.FunctorExpression.Sorts
 import           Copar.FunctorExpression.Type
 import           Copar.FunctorExpression.Parser

bench/Copar/Functors/BenchGroupValued.hs

@@ -15,7 +15,7 @@ import           Control.Monad.State.Strict
 
 import           Copar.Coalgebra.Parser
 import           Copar.Coalgebra.Parser.Internal
-import           Copar.Coalgebra.RefinementTypes
+import           Copar.RefinementInterface
 import           Copar.Functors.GroupValued
 
 benchmarks :: Benchmark