Roll back 6f972e239f668fa29cab43d7968692cd285997a9

`optimization.h` needs to be compatible with C.
`#include <utility>` is C++-only.

PiperOrigin-RevId: 645651894
Change-Id: I55ebc3369b05788346cd0ab684b50bdfc2345fd4

absl/base/optimization.h

diff --git a/absl/base/optimization.h b/absl/base/optimization.h
index fb7ac37..f985995 100644
--- a/absl/base/optimization.h
+++ b/absl/base/optimization.h
@@ -23,7 +23,6 @@
 #define ABSL_BASE_OPTIMIZATION_H_
 
 #include <assert.h>
-#include <utility>
 
 #include "absl/base/config.h"
 #include "absl/base/options.h"