fix: Compiler warnings

Author: sgillespie

cardano-db-sync/cardano-db-sync.cabal

@@ -373,7 +373,7 @@ test-suite test
                       , cardano-ledger-allegra:{cardano-ledger-allegra,testlib}
                       , cardano-ledger-alonzo:{testlib}
                       , cardano-ledger-byron
-                      , cardano-ledger-mary:{cardano-ledger-mary,testlib}
+                      , cardano-ledger-mary:{testlib}
                       , cardano-ledger-shelley:{cardano-ledger-shelley,testlib} >= 1.12.3.0
                       , cardano-db
                       , cardano-db-sync

cardano-db-sync/test/Cardano/DbSync/Era/Shelley/Generic/Tx/TypesTest.hs

@@ -7,7 +7,6 @@ import qualified Cardano.DbSync.Gen as Gen
 import Cardano.Prelude
 import qualified Data.Aeson as Aeson
 import Hedgehog
-import qualified Hedgehog.Gen as Gen
 
 tests :: IO Bool
 tests =