Remove deprecated gql quasi quoter

tests/Language/GraphQL/THSpec.hs

@@ -1,24 +0,0 @@
-{- This Source Code Form is subject to the terms of the Mozilla Public License,
-   v. 2.0. If a copy of the MPL was not distributed with this file, You can
-   obtain one at https://mozilla.org/MPL/2.0/. -}
-
-{-# LANGUAGE QuasiQuotes #-}
-
-module Language.GraphQL.THSpec
-    ( spec
-    ) where
-
-import Language.GraphQL.TH (gql)
-import Test.Hspec (Spec, describe, it, shouldBe)
-
-spec :: Spec
-spec =
-    describe "gql" $
-        it "replaces CRNL with NL" $
-            let expected = "line1\nline2\nline3"
-                actual = [gql|
-                  line1
-                  line2
-                  line3
-                |]
-             in actual `shouldBe` expected