spinlock.h: Clean up includes
1. Removes unused includes
2. Replaces <stdint.h> with <cstdint>
PiperOrigin-RevId: 469705016
Change-Id: Ic32871be93d01436f5538c44321faad7bd2e4511
diff --git a/absl/base/internal/spinlock.h b/absl/base/internal/spinlock.h
index 14303d1..09ba582 100644
--- a/absl/base/internal/spinlock.h
+++ b/absl/base/internal/spinlock.h
@@ -29,10 +29,8 @@
#ifndef ABSL_BASE_INTERNAL_SPINLOCK_H_
#define ABSL_BASE_INTERNAL_SPINLOCK_H_
-#include <stdint.h>
-#include <sys/types.h>
-
#include <atomic>
+#include <cstdint>
#include "absl/base/attributes.h"
#include "absl/base/const_init.h"
@@ -41,8 +39,6 @@
#include "absl/base/internal/raw_logging.h"
#include "absl/base/internal/scheduling_mode.h"
#include "absl/base/internal/tsan_mutex_interface.h"
-#include "absl/base/macros.h"
-#include "absl/base/port.h"
#include "absl/base/thread_annotations.h"
namespace absl {
