Remove useless ELF_GETSHDRSTRNDX test

Author: Rtoax

cmake/FindLibElf.cmake

@@ -43,15 +43,4 @@ FIND_PACKAGE_HANDLE_STANDARD_ARGS(LibElf "Please install the libelf development
   LIBELF_LIBRARIES
   LIBELF_INCLUDE_DIRS)
 
-SET(CMAKE_REQUIRED_LIBRARIES elf)
-INCLUDE(CheckCXXSourceCompiles)
-CHECK_CXX_SOURCE_COMPILES("#include <libelf.h>
-int main() {
-  Elf *e = (Elf*)0;
-  size_t sz;
-  elf_getshdrstrndx(e, &sz);
-  return 0;
-}" ELF_GETSHDRSTRNDX)
-SET(CMAKE_REQUIRED_LIBRARIES)
-
-mark_as_advanced(LIBELF_INCLUDE_DIRS LIBELF_LIBRARIES ELF_GETSHDRSTRNDX)
+mark_as_advanced(LIBELF_INCLUDE_DIRS LIBELF_LIBRARIES)