Drop unused C type macros check

The `KWSYS_C_TYPE_MACROS` check has not been used since commit c1149ef6
(Drop the FundamentalType.h component of KWSys, 2015-12-14).

kwsysPlatformTestsC.c

@@ -69,40 +69,3 @@ int KWSYS_PLATFORM_TEST_C_MAIN()
   return clock_gettime(CLOCK_MONOTONIC, &ts);
 }
 #endif
-
-#ifdef TEST_KWSYS_C_TYPE_MACROS
-char* info_macros =
-#  if defined(__SIZEOF_SHORT__)
-  "INFO:macro[__SIZEOF_SHORT__]\n"
-#  endif
-#  if defined(__SIZEOF_INT__)
-  "INFO:macro[__SIZEOF_INT__]\n"
-#  endif
-#  if defined(__SIZEOF_LONG__)
-  "INFO:macro[__SIZEOF_LONG__]\n"
-#  endif
-#  if defined(__SIZEOF_LONG_LONG__)
-  "INFO:macro[__SIZEOF_LONG_LONG__]\n"
-#  endif
-#  if defined(__SHORT_MAX__)
-  "INFO:macro[__SHORT_MAX__]\n"
-#  endif
-#  if defined(__INT_MAX__)
-  "INFO:macro[__INT_MAX__]\n"
-#  endif
-#  if defined(__LONG_MAX__)
-  "INFO:macro[__LONG_MAX__]\n"
-#  endif
-#  if defined(__LONG_LONG_MAX__)
-  "INFO:macro[__LONG_LONG_MAX__]\n"
-#  endif
-  "";
-
-int KWSYS_PLATFORM_TEST_C_MAIN_ARGS(argc, argv)
-{
-  int require = 0;
-  require += info_macros[argc];
-  (void)argv;
-  return require;
-}
-#endif