🧹 Remove PALS specific feature request

In addition to the specific feature request, test the
`fetch_service_for` against a Hyrax native service (instead of one that
is found only in PALS)

spec/helpers/blacklight/advanced_search_helper_spec.rb

@@ -15,11 +15,6 @@
     it "returns the first 6 advanced search fields" do
       expect(primary_search_fields_for(search_fields_for_advanced_search).size).to eq(6)
     end
-
-    it "returns the client specified advanced search fields" do
-      expect(primary_search_fields_for(search_fields_for_advanced_search).map { |search| search.last.key })
-        .to eq(["title", "creator", "date_created", "keyword", "license", "subject"])
-    end
   end
 
   describe "#secondary_search_fields" do
@@ -73,11 +68,11 @@ def fetch_local_yml(key)
 
   describe "#fetch_service_for" do
     it "returns the service class for a given a valid key" do
-      expect(fetch_service_for('accessibility_feature')).to eq(Hyrax::AccessibilityFeaturesService)
+      expect(fetch_service_for('rights_statement')).to eq(Hyrax::RightsStatementService)
     end
 
     it "returns the service even if it should have been plural" do
-      expect(fetch_service_for('accessibility_features')).to eq(Hyrax::AccessibilityFeaturesService)
+      expect(fetch_service_for('rights_statement')).to eq(Hyrax::RightsStatementService)
     end
 
     it "returns nil for an invalid key" do