do not use preprocessor macros in interface headers; doxygen doesn't know about preprocessor symbols used in the real headers

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58711 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/sckipc.h

@@ -31,13 +31,7 @@ enum wxIPCFormat
   wxIPC_LOCALE =           16,
   wxIPC_UTF8TEXT =         17,
   wxIPC_UTF32TEXT =        18,
-#if SIZEOF_WCHAR_T == 2
-  wxIPC_UNICODETEXT = wxIPC_UTF16TEXT,
-#elif SIZEOF_WCHAR_T == 4
-  wxIPC_UNICODETEXT = wxIPC_UTF32TEXT,
-#else
-#  error "Unknown wchar_t size"
-#endif
+  wxIPC_UNICODETEXT,
   wxIPC_PRIVATE =          20
 };