chore(banner): remove banner until we have new news

public/_includes/_hero-home.jade

@@ -4,14 +4,4 @@ header(class="background-sky")
 
     .hero-cta
       a(href="/docs/ts/latest/quickstart.html" class="md-raised button button-large button-plain"
-      md-button) Get Started
-
-.banner.is-centered
-
-  a(href="http://angularconnect.com/?utm_source=angular-io&utm_medium=angular-io&utm_campaign=angular-io" class="button button-large"  md-button)
-    .banner-ng-annoucement.angularconnect-logo
-      h3.text-display-1 AngularConnect 2015
-      h4.text-subhead The European Angular Conference
-  div
-    a(href="https://www.youtube.com/channel/UCzrskTiT_ObAk3xBkVxMz5g" class="button button-xlarge button-navy"  md-button) Watch Talk Videos
-
+      md-button) Get Started