Remove GenDeprecated test

The Generics extension is no longer supported.

testsuite/tests/ghc-regress/generics/GenDeprecated.hs

-{-# LANGUAGE Generics #-}
-
-module GenDeprecated where

testsuite/tests/ghc-regress/generics/all.T

@@ -2,7 +2,6 @@ setTestOpts(only_compiler_types(['ghc']))
 
 test('GenCanDoRep0', normal, compile, [''])
 
-test('GenDeprecated',  normal, compile, [''])
 test('GenShouldFail0',  normal, compile_fail, [''])
 test('GenCannotDoRep0', normal, compile_fail, [''])
 test('GenCannotDoRep1', normal, compile_fail, [''])