declare required extensions

and remove default extension pragmas (OverloadedStrings)

test/Feature/AuthSpec.hs

@@ -1,4 +1,4 @@
-{-# LANGUAGE OverloadedStrings, QuasiQuotes #-}
+{-# LANGUAGE QuasiQuotes #-}
 module Feature.AuthSpec where
 
 -- {{{ Imports

test/Feature/CorsSpec.hs

@@ -1,5 +1,3 @@
-{-# LANGUAGE OverloadedStrings #-}
-
 module Feature.CorsSpec where
 
 -- {{{ Imports

test/Feature/InsertSpec.hs

@@ -1,5 +1,4 @@
-
-{-# LANGUAGE OverloadedStrings, QuasiQuotes #-}
+{-# LANGUAGE QuasiQuotes #-}
 module Feature.InsertSpec where
 
 -- {{{ Imports

test/Feature/QuerySpec.hs

@@ -1,5 +1,3 @@
-
-{-# LANGUAGE OverloadedStrings #-}
 module Feature.QuerySpec where
 
 import Test.Hspec

test/Feature/RangeSpec.hs

@@ -1,4 +1,3 @@
-{-# LANGUAGE OverloadedStrings #-}
 module Feature.RangeSpec where
 
 import Test.Hspec

test/Feature/StructureSpec.hs

@@ -1,4 +1,4 @@
-{-# LANGUAGE OverloadedStrings, QuasiQuotes #-}
+{-# LANGUAGE QuasiQuotes #-}
 module Feature.StructureSpec where
 
 import Test.Hspec

test/SpecHelper.hs

@@ -1,4 +1,3 @@
-{-# LANGUAGE OverloadedStrings #-}
 module SpecHelper where
 
 import Network.Wai

test/TestTypes.hs

@@ -1,4 +1,3 @@
-{-# LANGUAGE OverloadedStrings #-}
 module TestTypes (
   IncPK(..),
   fromList

test/Unit/ErrorsSpec.hs

@@ -1,4 +1,3 @@
-{-# LANGUAGE OverloadedStrings #-}
 module Unit.ErrorsSpec where
 
 import Test.Hspec

test/Unit/PgQuerySpec.hs

@@ -1,5 +1,3 @@
-{-# LANGUAGE OverloadedStrings #-}
-
 module Unit.PgQuerySpec where
 
 import Test.Hspec

test/Unit/PgStructureSpec.hs

@@ -1,5 +1,3 @@
-{-# LANGUAGE OverloadedStrings #-}
-
 module Unit.PgStructureSpec where
 
 import Test.Hspec