Remove Twitter section in footer (#1575)

Signed-off-by: Sönke Joppien <[email protected]>

footer-template.html

@@ -41,18 +41,6 @@
         </div>
     </div>
     <hr class="hairline-footer">
-    <div class="row text-center">
-        <div class="col-md-4"></div>
-        <div class="col-md-8">
-            <p style="float:right">
-                <a class="twitter-share-button"
-                    href="https://twitter.com/intent/tweet?text=Creating APIs has never been easier using %23LoopBack 4 by %40StrongLoop. Check it out at loopback.io.&url=loopback.io">
-                    Tweet</a>
-                <a href="https://twitter.com/intent/tweet?screen_name=StrongLoop&ref_src=twsrc%5Etfw" class="twitter-follow-button" data-show-count="true">Tweet to @StrongLoop</a>
-                <script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>
-            </p>
-        </div>
-    </div>
     <div class="row text-center">
         <div class="col-md-2">
             <a href="https://openjsf.org"><img class="openjs-logo" src="https://nodered.org/images/openjs_foundation-logo.svg" /></a>