Delete macros from `curl_config.h.cmake` that were never set by
the CMake script: `_LARGE_FILES`, `_THREAD_SAFE`, `const`, `size_t`.
Also:
- lib/config-riscos.h: drop `#undef _LARGE_FILES`. This is an
IBM-specific macro, no need to unset it on other platforms.
Cherry-picked from #17576
Closes #17580
/* Number of bits in a file offset, on hosts where this is settable. */
#undef _FILE_OFFSET_BITS
-/* Define for large files, on AIX-style hosts. */
-#undef _LARGE_FILES
-
/* Define to empty if `const' does not conform to ANSI C. */
#undef const
/* Number of bits in a file offset, on hosts where this is settable. */
#cmakedefine _FILE_OFFSET_BITS ${_FILE_OFFSET_BITS}
-/* Define for large files, on AIX-style hosts. */
-#cmakedefine _LARGE_FILES ${_LARGE_FILES}
-
-/* define this if you need it to compile thread-safe code */
-#cmakedefine _THREAD_SAFE ${_THREAD_SAFE}
-
-/* Define to empty if `const' does not conform to ANSI C. */
-#cmakedefine const ${const}
-
-/* Define to `unsigned int' if <sys/types.h> does not define. */
-#cmakedefine size_t ${size_t}
-
/* the signed version of size_t */
#cmakedefine ssize_t ${ssize_t}