Merge "<stdatomic.h>: remove unnecessary __attribute__((__unused__))s." into main am: bde6ee1af5

Original change: https://android-review.googlesource.com/c/platform/bionic/+/3533162

Change-Id: Ibcada7be376126514bf48085539f8e8f2474540f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/libc/include/bits/stdatomic.h b/libc/include/bits/stdatomic.h
index 8717e15..8631874 100644
--- a/libc/include/bits/stdatomic.h
+++ b/libc/include/bits/stdatomic.h
@@ -95,11 +95,11 @@
  * 7.17.4 Fences.
  */
 
-static __inline void atomic_thread_fence(memory_order __order __attribute__((__unused__))) {
+static __inline void atomic_thread_fence(memory_order __order) {
 	__c11_atomic_thread_fence(__order);
 }
 
-static __inline void atomic_signal_fence(memory_order __order __attribute__((__unused__))) {
+static __inline void atomic_signal_fence(memory_order __order) {
 	__c11_atomic_signal_fence(__order);
 }