remove platform_spec_selector.cpp and bedrock_selector.cpp

include/nana/filesystem/file_iterator.hpp

@@ -38,7 +38,7 @@ namespace filesystem
 		fileinfo();
 #ifdef NANA_WINDOWS
 		fileinfo(const WIN32_FIND_DATA& wfd);
-#elif NANA_LINUX or NANA_MACOS
+#elif defined(NANA_POSIX)
 		fileinfo(const nana::string& filename, const struct stat &);
 #endif
 		nana::string name;