Remove wxPM, wxWidgets port to OS/2.

This port is not used and is not being worked on, so remove it to reduce the
amount of the code which needs to be updated for every global change.

Also remove tests for VisualAge compiler which isn't used since ages.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76533 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/rawbmp.h

@@ -168,11 +168,6 @@ typedef wxPixelFormat<unsigned char, 24, 0, 1, 2> wxImagePixelFormat;
     // Under GTK+ 2.X we use GdkPixbuf, which is standard RGB or RGBA
     typedef wxPixelFormat<unsigned char, 24, 0, 1, 2> wxNativePixelFormat;
 
-    #define wxPIXEL_FORMAT_ALPHA 3
-#elif defined(__WXPM__)
-    // Under PM, we can use standard RGB or RGBA
-    typedef wxPixelFormat<unsigned char, 24, 0, 1, 2> wxNativePixelFormat;
-
     #define wxPIXEL_FORMAT_ALPHA 3
 #elif defined(__WXDFB__)
     // Under DirectFB, RGB components are reversed, they're in BGR order