<cutils/atomic.h> has been inlined for two years now.

Change-Id: If4f817acc054d7336df09a5b8dde34693e0e96a5
diff --git a/libcutils/Android.mk b/libcutils/Android.mk
index c0d4d76..b5780b8 100644
--- a/libcutils/Android.mk
+++ b/libcutils/Android.mk
@@ -17,7 +17,6 @@
 include $(CLEAR_VARS)
 
 libcutils_common_sources := \
-        atomic.c.arm \
         config_utils.c \
         fs_config.c \
         hashmap.c \
diff --git a/libcutils/atomic.c b/libcutils/atomic.c
deleted file mode 100644
index d34aa00..0000000
--- a/libcutils/atomic.c
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * Copyright (C) 2007 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.
- */
-
-/*
- * Generate non-inlined versions of android_atomic functions.
- * Nobody should be using these, but some binary blobs currently (late 2014)
- * are.
- * If you read this in 2015 or later, please try to delete this file.
- */
-
-#define ANDROID_ATOMIC_INLINE
-
-#include <cutils/atomic.h>