Drop dead Windows code

Maybe fix build?

Author: Girgias

ext/phar/phar.c

@@ -2220,15 +2220,9 @@ zend_string* phar_split_fname_ex(const char *filename, size_t filename_len, zend
 	if (entry) {
 		if (ext_str[ext_len]) {
 			size_t computed_entry_len = filename_len - arch_len;
-#ifdef PHP_WIN32
-			/* TODO: can we handle the unixify path in phar_fix_filepath() directly ? */
-			char *fixed_path_for_windows = estrndup(ext_str+ext_len, computed_entry_len);
-			phar_unixify_path_separators(fixed_path_for_windows, computed_entry_len);
-			*entry = phar_fix_filepath(fixed_path_for_windows, computed_entry_len, false);
-			efree(fixed_path_for_windows);
-#else
+			/* We don't need to unixify the path on Windows,
+			 * as ext_str is derived from filename that was already unixify */
 			*entry = phar_fix_filepath(ext_str+ext_len, computed_entry_len, false);
-#endif
 		} else {
 			*entry = ZSTR_CHAR('/');
 		}