[libc++][NFC] Fix leftover && in comment

Author: ldionne

libcxx/include/__algorithm/ranges_max.h

@@ -98,6 +98,6 @@ _LIBCPP_END_NAMESPACE_STD
 
 _LIBCPP_POP_MACROS
 
-#endif // _LIBCPP_STD_VER >= 20 &&
+#endif // _LIBCPP_STD_VER >= 20
 
 #endif // _LIBCPP___ALGORITHM_RANGES_MAX_H

libcxx/include/__algorithm/ranges_min.h

@@ -90,6 +90,6 @@ _LIBCPP_END_NAMESPACE_STD
 
 _LIBCPP_POP_MACROS
 
-#endif // _LIBCPP_STD_VER >= 20 &&
+#endif // _LIBCPP_STD_VER >= 20
 
 #endif // _LIBCPP___ALGORITHM_RANGES_MIN_H