Remove the X widget (#3714)

* Remove the X widget

It's not displaying anything since months

* Update index.dd

Co-authored-by: Nick Treleaven <[email protected]>

---------

Co-authored-by: Nick Treleaven <[email protected]>

Author: SixthDot

index.dd

@@ -365,10 +365,6 @@ $(DIVID news,
     <iframe src="https://forum.dlang.org/frame-announcements"></iframe>
     <iframe src="https://forum.dlang.org/frame-discussions"></iframe>
     )
-    $(DIVID twitter,
-    <a class="twitter-timeline" data-height="420" href="https://twitter.com/D_Programming?ref_src=twsrc%5Etfw">Tweets by D_Programming</a>
-    <script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>
-    )
 )
 
 $(DIVC boxes,