Remove cstdint.h

This is not a "real" header - definitions should be in stdint.h
and cstdint.

Author: lcartey

cpp/autosar/src/codingstandards/cpp/CommonTypes.qll

@@ -1,7 +1,7 @@
 import cpp as default
 
 /*
- * Implementations of the C/C++ Fixed Width Types from cstdint.h.
+ * Implementations of the C/C++ Fixed Width Types from cstdint.
  *
  * TODO: Deprecate once this is available in the CodeQL standard library.
  */

cpp/common/test/includes/standard-library/cstdint

@@ -1,6 +1,20 @@
-#ifndef _CPP_CSTDINT
-#define _CPP_CSTDINT
-
-#define MAX_INT
-#include <cstdint.h>
-#endif
+#ifndef _GHLIBCPP_CSTDINT
+#define _GHLIBCPP_CSTDINT
+#include "stdint.h"
+namespace std {
+using ::int16_t;
+using ::int32_t;
+using ::int64_t;
+using ::int8_t;
+using ::intmax_t;
+using ::uint16_t;
+using ::uint32_t;
+using ::uint64_t;
+using ::uint8_t;
+using ::uint_fast16_t;
+using ::uint_fast32_t;
+using ::uint_fast64_t;
+using ::uint_fast8_t;
+using ::uintmax_t;
+} // namespace std
+#endif // _GHLIBCPP_CSTDINT

cpp/common/test/includes/standard-library/cstdint.h

@@ -1,7 +1,7 @@
 #ifndef _GHLIBCPP_RANDOM
 #define _GHLIBCPP_RANDOM
-#include "cstdint.h"
 #include "stddef.h"
+#include <cstdint>
 #include <string>
 
 namespace std {