No changes whatsoever, just remove trailing whitespace.

There are no real changes in this commit but it removes all trailing white
space from our source files. This avoids problems when applying patches and
making diffs and it would be nice to prevent it from reappearing.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65680 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/layout/expt.cpp

@@ -4,9 +4,9 @@
  * the original, so abandoned.
 
  Example:
- 
+
   wxConstrain(frame->panel,
-  
+
     ( leftOf   (frame->panel) = leftOf   (frame),
       topOf    (frame->panel) = topOf    (frame),
       rightOf  (frame->panel) = rightOf  (frame),
@@ -70,7 +70,7 @@ class wxConstraintOp: public wxObject
 
   wxConstraintOp operator = (const wxConstraintOp& arg2);
   wxConstraintOp operator = (const int value);
-  
+
   friend wxConstraintOp operator % (const int perCent, const wxConstraintOp& arg2);
   friend wxConstraintOp operator + (wxConstraintOp& arg1, int margin);
   friend wxConstraintOp operator - (wxConstraintOp& arg1, int margin);