Removed DeepCove as a sponsor (#561)

* Fixed sponsor layout

* Removed DeepCove as a sponsor

Author: ReedCopsey

img/sup/deep_cove.png

@@ -508,7 +508,7 @@ <h2 class="text-center section-header"><a href="http://foundation.fsharp.org/spo
                                 <img class="center-block img-responsive carousel-img" src="/img/sup/cumps_consulting.png" />   
                             </div>
                             <div class="col-md-4">
-                                <img class="center-block img-responsive carousel-img" src="/img/sup/deep_cove.png" />   
+                                <img class="center-block img-responsive carousel-img" src="/img/sup/jet.png" alt="Jet" />                                
                             </div>
                             <div class="col-md-4">
                                 <img class="center-block img-responsive carousel-img" src="/img/sup/prolucid.png" />                                
@@ -533,9 +533,6 @@ <h2 class="text-center section-header"><a href="http://foundation.fsharp.org/spo
                             <div class="col-md-4">
                                 <img class="center-block img-responsive carousel-img" src="/img/sup/fsharpworks.png" alt="fsharpWorks" />
                             </div>
-                            <div class="col-md-4">
-                                <img class="center-block img-responsive carousel-img" src="/img/sup/jet.png" alt="Jet" />                                
-                            </div>
                         </div>
                     </div>
                 </div>