treewide: clean-up ApplicativeDo after it enabled by default

Author: Anton-Latukha

src/Nix/Effects/Basic.hs

@@ -1,4 +1,3 @@
-{-# LANGUAGE ApplicativeDo #-}
 {-# LANGUAGE CPP #-}
 {-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE LambdaCase #-}

src/Nix/Exec.hs

@@ -1,5 +1,4 @@
 {-# LANGUAGE AllowAmbiguousTypes #-}
-{-# LANGUAGE ApplicativeDo #-}
 {-# LANGUAGE CPP #-}
 {-# LANGUAGE ConstraintKinds #-}
 {-# LANGUAGE FlexibleContexts #-}
@@ -14,7 +13,6 @@
 {-# LANGUAGE TypeApplications #-}
 {-# LANGUAGE TypeFamilies #-}
 {-# LANGUAGE UndecidableInstances #-}
-{-# LANGUAGE ApplicativeDo #-}
 
 {-# OPTIONS_GHC -Wno-orphans #-}
 {-# OPTIONS_GHC -fno-warn-name-shadowing #-}

src/Nix/Lint.hs

@@ -13,7 +13,6 @@
 {-# LANGUAGE TypeFamilies #-}
 {-# LANGUAGE UndecidableInstances #-}
 {-# LANGUAGE InstanceSigs #-}
-{-# LANGUAGE ApplicativeDo #-}
 
 {-# OPTIONS_GHC -fno-warn-name-shadowing #-}
 {-# OPTIONS_GHC -Wno-missing-methods #-}

src/Nix/Parser.hs

@@ -4,7 +4,6 @@
 {-# LANGUAGE DeriveGeneric #-}
 {-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE ApplicativeDo #-}
 
 {-# OPTIONS_GHC -fno-warn-name-shadowing #-}
 {-# OPTIONS_GHC -Wno-missing-signatures #-}

src/Nix/Reduce.hs

@@ -1,6 +1,5 @@
 {-# LANGUAGE CPP #-}
 {-# LANGUAGE AllowAmbiguousTypes #-}
-{-# LANGUAGE ApplicativeDo #-}
 {-# LANGUAGE ConstraintKinds #-}
 {-# LANGUAGE DeriveTraversable #-}
 {-# LANGUAGE FlexibleContexts #-}

src/Nix/Thunk/Basic.hs

@@ -8,7 +8,6 @@
 {-# LANGUAGE TupleSections #-}
 {-# LANGUAGE UndecidableInstances #-}
 {-# LANGUAGE InstanceSigs #-}
-{-# LANGUAGE ApplicativeDo #-}