remove the hardcoded hasCreator and publisher inputs in submission from

app/views/submissions/_form_content.html.haml

@@ -28,17 +28,9 @@
       = attribute_form_group_container('location', required: true) do
         = render partial: 'submissions/submission_location_form'
 
-    %div#key-properties-card.mt-4.agents-inputs
+    %div#key-properties-card.mt-4
       = metadata_section('key-properties', 'Key properties', collapsed: false) do
         = form_group_attribute("URI", required: true)
-        = form_group_attribute("identifier", required: true)
-        = attribute_form_group_container("hasCreator", required: true) do
-          = render NestedAgentSearchInputComponent.new(agents: @submission.hasCreator , agent_type: 'person', name_prefix: object_name+'[hasCreator]',
-                                                       parent_id: '')
-        = attribute_form_group_container("publisher", required: true) do
-          = render NestedAgentSearchInputComponent.new(agents: @submission.publisher , agent_type: '', name_prefix: object_name+'[publisher]',
-                                                       parent_id: '')
-
         = form_group_attribute("deprecated")
         = form_group_attribute("hasOntologySyntax") do
           %p