Remove broken Twitter link

Author: scjody

_posts/dashboards/xlwings_assets/2015-06-30-xlwings.html

@@ -38,7 +38,7 @@ <h4 id="ABOUT-THE-AUTHOR:">ABOUT THE AUTHOR:<a class="anchor-link" href="#ABOUT-
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-<p>This notebook was contributed by <a href="https://plot.ly/~otto.stegmaier">Plotly user Otto Stegmaier</a>.  You can follow Otto on Twitter <a href="https://twitter.com/otto_stegmaier?lang=en">@otto_stegmaier</a> or <a href="https://github.com/ostegm">Github</a>.</p>
+<p>This notebook was contributed by <a href="https://plot.ly/~otto.stegmaier">Plotly user Otto Stegmaier</a>.  You can follow Otto on <a href="https://github.com/ostegm">Github</a>.</p>
 
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@@ -8368,4 +8368,4 @@ <h3 id="Step-5:-Sharing-your-work-and-Collaborating-with-Others">Step 5: Sharing
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-</div>{% endraw %}
+</div>{% endraw %}