ART-tests: Remove DX-dependency from 476-checker-ctor-fence-redun-elim

The test was already passing with D8, this CL only enables D8.

Bug: 65168732
Test: art/test.py -r --host --gcstress -t 476-checker-ctor-fence-redun-elim
      art/test.py -r --target --gcstress -t 476-checker-ctor-fence-redun-elim
Change-Id: Ie44e853477b46be578d34480ac2beea7d9a195d8
diff --git a/test/476-checker-ctor-fence-redun-elim/build b/test/476-checker-ctor-fence-redun-elim/build
deleted file mode 100644
index 10ffcc5..0000000
--- a/test/476-checker-ctor-fence-redun-elim/build
+++ /dev/null
@@ -1,20 +0,0 @@
-#!/bin/bash
-#
-# Copyright 2017 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# See b/65168732
-export USE_D8=false
-
-./default-build "$@"