diff --git a/da-assistant/Data/These/Extended.hs b/da-assistant/Data/These/Extended.hs
deleted file mode 100644
index 9d68a3dc41f..00000000000
--- a/da-assistant/Data/These/Extended.hs
+++ /dev/null
@@ -1,25 +0,0 @@
--- Copyright (c) 2019 Digital Asset (Switzerland) GmbH and/or its affiliates. All rights reserved.
--- SPDX-License-Identifier: Apache-2.0
-
-
-module Data.These.Extended
-    ( module Data.These
-    , justHere
-    , justThere
-    ) where
-
-import Data.These
-
--- | Extract the first half of 'These'.
-justHere :: These a t -> Maybe a
-justHere = \case
-    This a -> Just a
-    That _ -> Nothing
-    These a _ -> Just a
-
--- | Extract the second half of 'These'.
-justThere :: These t a -> Maybe a
-justThere = \case
-    This _ -> Nothing
-    That a -> Just a
-    These _ a -> Just a
diff --git a/daml-foundations/daml-tools/da-hs-damlc-app/src/da-hs-damlc-app.hs b/daml-foundations/daml-tools/da-hs-damlc-app/src/da-hs-damlc-app.hs
deleted file mode 100644
index 331ba994912..00000000000
--- a/daml-foundations/daml-tools/da-hs-damlc-app/src/da-hs-damlc-app.hs
+++ /dev/null
@@ -1,6 +0,0 @@
--- Copyright (c) 2019 Digital Asset (Switzerland) GmbH and/or its affiliates. All rights reserved.
--- SPDX-License-Identifier: Apache-2.0
-
-module Main (module DA.Cli.Damlc) where
-
-import DA.Cli.Damlc
diff --git a/libs-haskell/da-hs-json-rpc/src/DA/Service/JsonRpc/Arbitrary.hs b/libs-haskell/da-hs-json-rpc/src/DA/Service/JsonRpc/Arbitrary.hs
deleted file mode 100644
index 0f9f07209c9..00000000000
--- a/libs-haskell/da-hs-json-rpc/src/DA/Service/JsonRpc/Arbitrary.hs
+++ /dev/null
@@ -1,81 +0,0 @@
--- Copyright (c) 2019 Digital Asset (Switzerland) GmbH and/or its affiliates. All rights reserved.
--- SPDX-License-Identifier: Apache-2.0
-
-{-# OPTIONS_GHC -Wno-orphans #-}
-module DA.Service.JsonRpc.Arbitrary() where
-
-import Data.Aeson.Types
-import qualified Data.HashMap.Strict as M
-import Data.Text (Text)
-import qualified Data.Text as T
-import DA.Service.JsonRpc.Data
-import Test.QuickCheck.Arbitrary
-import Test.QuickCheck.Gen
-
-instance Arbitrary Text where
-    arbitrary = T.pack <$> arbitrary
-
-instance Arbitrary Ver where
-    arbitrary = elements [V1, V2]
-
-instance Arbitrary Request where
-    arbitrary = oneof
-        [ Request <$> arbitrary <*> arbitrary <*> arbitrary <*> arbitrary
-        , Notif <$> arbitrary <*> arbitrary <*> arbitrary
-        ]
-
-instance Arbitrary Response where
-    arbitrary = oneof
-        [ Response <$> arbitrary <*> arbitrary <*> arbitrary
-        , ResponseError <$> arbitrary <*> arbitrary <*> arbitrary
-        , OrphanError <$> arbitrary <*> arbitrary
-        ]
-
-
-instance Arbitrary ErrorObj where
-    arbitrary = oneof
-        [ ErrorObj <$> arbitrary <*> arbitrary <*> arbitrary
-        , ErrorVal <$> arbitrary
-        ]
-
-instance Arbitrary BatchRequest where
-    arbitrary = oneof
-        [ BatchRequest <$> arbitrary
-        , SingleRequest <$> arbitrary
-        ]
-
-instance Arbitrary BatchResponse where
-    arbitrary = oneof
-        [ BatchResponse <$> arbitrary
-        , SingleResponse <$> arbitrary
-        ]
-
-instance Arbitrary Message where
-    arbitrary = oneof
-        [ MsgRequest  <$> arbitrary
-        , MsgResponse <$> arbitrary
-        , MsgBatch    <$> batch
-        ]
-      where
-        batch = listOf $ oneof [ MsgRequest  <$> arbitrary
-                               , MsgResponse <$> arbitrary
-                               ]
-
-instance Arbitrary Id where
-    arbitrary = oneof [IdInt <$> arbitrary, IdTxt <$> arbitrary]
-
-instance Arbitrary Value where
-    arbitrary = resize 10 $ oneof [nonull, lsn, objn] where
-        nonull = oneof
-            [ toJSON <$> (arbitrary :: Gen String)
-            , toJSON <$> (arbitrary :: Gen Int)
-            , toJSON <$> (arbitrary :: Gen Double)
-            , toJSON <$> (arbitrary :: Gen Bool)
-            ]
-        val = oneof [ nonull, return Null ]
-        ls   = toJSON <$> listOf val
-        obj  = toJSON . M.fromList <$> listOf ps
-        ps   = (,) <$> (arbitrary :: Gen String) <*> oneof [val, ls]
-        lsn  = toJSON <$> listOf (oneof [ls, obj, val])
-        objn = toJSON . M.fromList <$> listOf psn
-        psn  = (,) <$> (arbitrary :: Gen String) <*> oneof [val, ls, obj]