Remove Windows CE support

Windows CE doesn't seem to be supported by Microsoft any longer. Last CE
release was in early 2013 and the PocketPC and Smartphone targets supported by
wxWidgets are long gone.

The build files where already removed in an earlier cleanup this commit
removes all files, every #ifdef and all documentation regarding the Windows CE
support.

Closes https://github.com/wxWidgets/wxWidgets/pull/81

src/common/intl.cpp

@@ -37,9 +37,7 @@
     #include "wx/module.h"
 #endif // WX_PRECOMP
 
-#ifndef __WXWINCE__
-    #include <locale.h>
-#endif
+#include <locale.h>
 
 // standard headers
 #include <ctype.h>
@@ -466,9 +464,6 @@ bool wxLocale::Init(int language, int flags)
         }
         else // language supported by Windows
         {
-            // Windows CE doesn't have SetThreadLocale() and there doesn't seem
-            // to be any equivalent
-#ifndef __WXWINCE__
             const wxUint32 lcid = info->GetLCID();
 
             // change locale used by Windows functions
@@ -485,7 +480,6 @@ bool wxLocale::Init(int language, int flags)
                 if (pfnSetThreadUILanguage)
                     pfnSetThreadUILanguage(LANGIDFROMLCID(lcid));
             }
-#endif
 
             // and also call setlocale() to change locale used by the CRT
             locale = info->GetLocaleName();