Drop the transformers dependency.

Author: Patrick Thomson

semantic.cabal

@@ -67,7 +67,6 @@ common dependencies
                      , streaming ^>= 0.2.2.0
                      , text ^>= 1.2.3.1
                      , these >= 0.7 && <1
-                     , transformers ^>= 0.5.6.2
                      , unix ^>= 2.7.2.2
                      , proto3-suite
                      , proto3-wire

src/Diffing/Algorithm/RWS.hs

@@ -14,7 +14,7 @@ module Diffing.Algorithm.RWS
 , equalTerms
 ) where
 
-import Control.Monad.Trans.State.Strict
+import Control.Monad.State.Strict
 import Data.Diff (DiffF(..), deleting, inserting, merge, replacing)
 import qualified Data.KdMap.Static as KdMap
 import Data.List (sortOn)