simplify condition for ABSL_INTERNAL_STD_FILESYSTEM_PATH_HASH_AVAILABLE

Author: h-vetinari

absl/hash/internal/hash.h

@@ -682,12 +682,7 @@ H AbslHashValue(H hash_state, std::basic_string_view<Char> str) {
   return H::combine_contiguous(std::move(hash_state), str.data(), str.size());
 }
 
-#if defined(__cpp_lib_filesystem) && __cpp_lib_filesystem >= 201703L && \
-    (!defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) ||        \
-     __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ >= 130000) &&       \
-    (!defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) ||         \
-     __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 101500) &&        \
-    (!defined(__XTENSA__))
+#if !defined(__XTENSA__)
 
 #define ABSL_INTERNAL_STD_FILESYSTEM_PATH_HASH_AVAILABLE 1