Remove blind_voting overreach

The 'Blind Voting' feature is described as:
> you do not want to show voting results and voters prior to user
> submitting a vote.

It does not imply or suggest that speaker or submitter names should be
hidden (especially from admins).

Resolves https://github.com/openSUSE/osem/issues/1984

app/views/admin/events/_proposal.html.haml

@@ -122,26 +122,20 @@
         %td
           %b Submitter
         %td
-          - if @program.show_voting?
-            = link_to @event.submitter.name, admin_user_path(@event.submitter)
-            (
-            = link_to @event.submitter.email, "mailto: #{@event.submitter.email}"
-            )
-          - else
-            %i Hidden
+          = link_to @event.submitter.name, admin_user_path(@event.submitter)
+          (
+          = link_to @event.submitter.email, "mailto: #{@event.submitter.email}"
+          )
       %tr
         %td
           %b Speakers
         %td
-          - if @program.show_voting?
-            - @event.speakers.each do |speaker|
-              %div
-                = link_to speaker.name, admin_user_path(speaker)
-                (
-                = link_to speaker.email, "mailto: #{speaker.email}"
-                )
-          - else
-            %i Hidden
+          - @event.speakers.each do |speaker|
+            %div
+              = link_to speaker.name, admin_user_path(speaker)
+              (
+              = link_to speaker.email, "mailto: #{speaker.email}"
+              )
       %tr
         %td
           %b Biographies