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

include/wx/msw/dialog.h

@@ -13,24 +13,10 @@
 
 #include "wx/panel.h"
 
-// this option is always enabled (there doesn't seem to be any good reason to
-// disable it) for desktop Windows versions but Windows CE dialogs are usually
-// not resizable and never show resize gripper anyhow so don't use it there
-#ifdef __WXWINCE__
-    #define wxUSE_DIALOG_SIZEGRIP 0
-#else
-    #define wxUSE_DIALOG_SIZEGRIP 1
-#endif
-
 extern WXDLLIMPEXP_DATA_CORE(const char) wxDialogNameStr[];
 
 class WXDLLIMPEXP_FWD_CORE wxDialogModalData;
 
-#if wxUSE_TOOLBAR && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
-class WXDLLIMPEXP_FWD_CORE wxToolBar;
-extern WXDLLIMPEXP_DATA_CORE(const char) wxToolBarNameStr[];
-#endif
-
 // Dialog boxes
 class WXDLLIMPEXP_CORE wxDialog : public wxDialogBase
 {
@@ -69,39 +55,12 @@ public:
     virtual void EndModal(int retCode);
 
 
-    // we treat dialog toolbars specially under Windows CE
-#if wxUSE_TOOLBAR && defined(__POCKETPC__)
-    // create main toolbar by calling OnCreateToolBar()
-    virtual wxToolBar* CreateToolBar(long style = -1,
-                                     wxWindowID winid = wxID_ANY,
-                                     const wxString& name = wxToolBarNameStr);
-    // return a new toolbar
-    virtual wxToolBar *OnCreateToolBar(long style,
-                                       wxWindowID winid,
-                                       const wxString& name );
-
-    // get the main toolbar
-    wxToolBar *GetToolBar() const { return m_dialogToolBar; }
-#endif // wxUSE_TOOLBAR && __POCKETPC__
-
-
     // implementation only from now on
     // -------------------------------
 
     // override some base class virtuals
     virtual bool Show(bool show = true);
-
-#if wxUSE_DIALOG_SIZEGRIP
     virtual void SetWindowStyleFlag(long style);
-#endif // wxUSE_DIALOG_SIZEGRIP
-
-#ifdef __POCKETPC__
-    // Responds to the OK button in a PocketPC titlebar. This
-    // can be overridden, or you can change the id used for
-    // sending the event with SetAffirmativeId. Returns false
-    // if the event was not processed.
-    virtual bool DoOK();
-#endif
 
     // Windows callbacks
     WXLRESULT MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam);
@@ -111,7 +70,6 @@ protected:
     void Init();
 
 private:
-#if wxUSE_DIALOG_SIZEGRIP
     // these functions deal with the gripper window shown in the corner of
     // resizable dialogs
     void CreateGripper();
@@ -125,11 +83,6 @@ private:
 
     // gripper window for a resizable dialog, NULL if we're not resizable
     WXHWND m_hGripper;
-#endif // wxUSE_DIALOG_SIZEGRIP
-
-#if wxUSE_TOOLBAR && defined(__POCKETPC__)
-    wxToolBar*  m_dialogToolBar;
-#endif
 
     // this pointer is non-NULL only while the modal event loop is running
     wxDialogModalData *m_modalData;