Remove global OverloadedStrings extension

ChrisPenner · ChrisPenner · commit 73f4484be936 · 2017-07-30T18:18:49.000-06:00
diff --git a/text-lens/text-lens.cabal b/text-lens/text-lens.cabal
@@ -24,8 +24,6 @@ library
                      , extra
   default-language:    Haskell2010
 
-  default-extensions:  OverloadedStrings
-
   ghc-options:         -Wall
 
 test-suite text-lens-test
