Add endpoints for removing enterprise images

app/controllers/api/logos_controller.rb

@@ -0,0 +1,16 @@
+module Api
+  class LogosController < EnterpriseAttachmentController
+    private
+
+    def attachment_name
+      :logo
+    end
+
+    def enterprise_authorize_action
+      case action_name.to_sym
+      when :destroy
+        :remove_logo
+      end
+    end
+  end
+end