Remove unnecessary redundant assignments.

Don't assign values consecutively to the same variable without using it in
between the assignments, this is useless.

See #15893.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75662 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/richtext/richtextbuffer.cpp

@@ -5115,8 +5115,6 @@ bool wxRichTextParagraph::Layout(wxDC& dc, wxRichTextDrawingContext& context, co
 
             // The descent for the whole line at this point, is the correct max descent
             maxDescent = childDescent;
-            // Maximum ascent
-            maxAscent = actualSize.y-childDescent;
 
             // lineHeight is given by the height for the whole line, since it will
             // take into account ascend/descend.