remove deprecated class attribute from CollectionType

app/models/hyrax/collection_type.rb

@@ -36,14 +36,6 @@ def title=(value)
       assign_machine_id
     end
 
-    # this class attribute is deprecated in favor of {.settings_attributes}
-    # these need to carefully align with boolean flag attributes/table columns,
-    # so making it settable is a liability. deprecating is challenging because
-    # +class_attribute+ calls +singleton_class.class_eval { redefine_method }+
-    # as the +name=+ implementation. there should be few callers outside hyrax.
-    class_attribute :collection_type_settings_methods, instance_writer: false
-    self.collection_type_settings_methods = SETTINGS_ATTRIBUTES
-
     # These are provided as a convenience method based on prior design discussions.
     alias_attribute :discovery, :discoverable
     alias_attribute :sharing, :sharable
@@ -123,14 +115,6 @@ def collections(use_valkyrie: Hyrax.config.use_valkyrie?)
       ActiveFedora::Base.where(Hyrax.config.collection_type_index_field.to_sym => to_global_id.to_s)
     end
 
-    ##
-    # @deprecated Use #collections.any? instead
-    #
-    # @return [Boolean] True if there is at least one collection of this type
-    def collections?
-      Deprecation.warn('Use #collections.any? instead.') && collections.any?
-    end
-
     # @return [Boolean] True if this is the Admin Set type
     def admin_set?
       machine_id == ADMIN_SET_MACHINE_ID

spec/models/hyrax/collection_type_spec.rb

@@ -7,20 +7,6 @@
     let!(:collection) { FactoryBot.valkyrie_create(:hyrax_collection, collection_type_gid: collection_type.to_global_id.to_s) }
   end
 
-  describe '.collection_type_settings_methods' do
-    it 'lists collection settings methods' do # deprecated
-      expect(described_class.collection_type_settings_methods)
-        .to include(:nestable?, :discoverable?, :brandable?)
-    end
-  end
-
-  describe '#collection_type_settings_methods' do
-    it 'lists collection settings methods' do # deprecated
-      expect(collection_type.collection_type_settings_methods)
-        .to include(:nestable?, :discoverable?, :brandable?)
-    end
-  end
-
   describe '.settings_attributes' do
     it 'lists collection settings methods' do
       expect(described_class.settings_attributes)

spec/support/matchers/collection_type_property_matchers.rb

@@ -25,6 +25,6 @@
 
 RSpec::Matchers.define :have_collections do
   match do |actual|
-    actual&.collections?
+    actual&.collections&.any?
   end
 end