Revert "Ensure DrawRectangle() stroke outline will always be visible"

This reverts commit 74d47d8173 because
it breaks DrawRectangle in outline mode because it modify line width.

common/gal/opengl/opengl_gal.cpp

@@ -688,9 +688,6 @@ void OPENGL_GAL::DrawRectangle( const VECTOR2D& aStartPoint, const VECTOR2D& aEn
     // Stroke the outline
     if( isStrokeEnabled )
     {
-        // Ensure stroke will be visible at current zoom
-        lineWidth = std::max( lineWidth, ( 1.01 / worldScale ) );
-
         currentManager->Color( strokeColor.r, strokeColor.g, strokeColor.b, strokeColor.a );
 
         std::deque<VECTOR2D> pointList;