Text: lol @ this TODO.

This is all going to get deprecated. Using a string view wouldn't help,
the rest is still too shitty.

src/Magnum/Text/Renderer.cpp

@@ -382,10 +382,6 @@ std::tuple<std::vector<Vertex>, Range2D> renderVerticesInternal(AbstractFont& fo
     Vector2 linePosition;
 
     /* Temp buffer so we don't allocate for each new line */
-    /**
-     * @todo C++1z: use std::string_view to avoid the one allocation and all
-     *      the copying altogether
-     */
     std::string line;
     line.reserve(text.size());