Remove deprecated string equality functionality.

lib/valkyrie.rb

@@ -87,19 +87,6 @@ def storage_adapter
       Valkyrie::StorageAdapter.find(super.to_sym)
     end
 
-    # @api public
-    # Configure id_string_equality to be true in order to make Valkyrie::ID
-    # equal to the string value they contain. This will be the default behavior
-    # in v3.0.0.
-    #
-    # @return [Boolean] Whether `Valkyrie::ID` should be equal to their string counterpart.
-    def id_string_equality
-      super
-    end
-
-    # @!attribute [w] id_string_equality=
-    #   The setter for #id_string_equality; see it's implementation
-
     # @api public
     #
     # The returned anonymous method (e.g. responds to #call) has a signature of

lib/valkyrie/id.rb

@@ -25,27 +25,12 @@ def to_str
     delegate :hash, to: :state
 
     def eql?(other)
-      return string_equality(other) if Valkyrie.config.id_string_equality == true
-      default_equality(other)
+      other == to_str
     end
     alias == eql?
 
     protected
 
-    def default_equality(other)
-      output = (other.class == self.class && other.state == state)
-      return output if output == true
-      if output == false && string_equality(other) && Valkyrie.config.id_string_equality.nil?
-        warn "[DEPRECATION] Valkyrie::IDs will always be equal to their string counterparts in 3.0.0. " \
-          "To silence this message, please either compare IDs or set Valkyrie.config.id_string_equality = true."
-      end
-      false
-    end
-
-    def string_equality(other)
-      other == to_str
-    end
-
     def state
       [@id]
     end

spec/valkyrie/types_spec.rb

@@ -35,40 +35,18 @@ class Resource < Valkyrie::Resource
     end
 
     context 'when a string is passed in' do
-      let(:message) do
-        /\[DEPRECATION\] Valkyrie::IDs will always be equal to their string counterparts in 3.0.0. To silence this message, please either compare IDs or set Valkyrie.config.id_string_equality = true./
-      end
       let(:thumbnail_id) { '123' }
 
       it 'casts to a string' do
         expect(resource.thumbnail_id).to eq Valkyrie::ID.new('123')
       end
 
-      it "echos a deprecated message if not configured" do
-        allow(Valkyrie.config).to receive(:id_string_equality).and_return(nil)
-
-        expect do
-          expect(resource.thumbnail_id).not_to eq '123'
-        end.to output(message).to_stderr
-      end
-
-      it "doesn't echo a deprecated message if configured" do
-        allow(Valkyrie.config).to receive(:id_string_equality).and_return(false)
-        expect do
-          expect(resource.thumbnail_id).not_to eq '123'
-        end.not_to output(message).to_stderr
+      it 'equals the equivalent string' do
+        expect(resource.thumbnail_id).to eq '123'
       end
 
-      context 'when String equality is configured' do
-        before { allow(Valkyrie.config).to receive(:id_string_equality).and_return(true) }
-
-        it 'equals the equivalent string' do
-          expect(resource.thumbnail_id).to eq '123'
-        end
-
-        it 'is equal to the equivalent string' do
-          expect('123' == resource.thumbnail_id).to be true
-        end
+      it 'is equal to the equivalent string' do
+        expect('123' == resource.thumbnail_id).to be true
       end
     end