Remove dependency on data-default-class

Author: harendra-kumar

src/Streamly/Coreutils/Common.hs

@@ -2,10 +2,4 @@ module Streamly.Coreutils.Common
     ( Switch (..))
 where
 
-import Data.Default.Class (Default(..))
-
 data Switch = On | Off deriving (Show, Eq)
-
-instance Default Switch
-    where
-    def = Off

streamly-coreutils.cabal

@@ -104,7 +104,6 @@ library
     , time >= 1.9 && < 1.14
     , unix >= 2.7.0 && < 2.8
     , directory >= 1.2.2 && < 1.4
-    , data-default-class >= 0.1 && < 0.2
   hs-source-dirs:      src
   exposed-modules:
       Streamly.Coreutils