diff --git a/app/lib/active_storage/service/ds_proxy_service.rb b/app/lib/active_storage/service/ds_proxy_service.rb
index bb516d287..fe540d591 100644
--- a/app/lib/active_storage/service/ds_proxy_service.rb
+++ b/app/lib/active_storage/service/ds_proxy_service.rb
@@ -1,7 +1,6 @@
 module ActiveStorage
   # Wraps an ActiveStorage::Service to route direct upload and direct download URLs through our proxy,
-  # thus avoiding exposing the storage provider’s URL to our end-users. It also overrides upload and
-  # object_for methods to fetch and put blobs through encryption proxy.
+  # thus avoiding exposing the storage provider’s URL to our end-users.
   class Service::DsProxyService < SimpleDelegator
     attr_reader :wrapped
 
@@ -24,37 +23,8 @@ module ActiveStorage
       publicize(url)
     end
 
-    # This method is responsible for writing to object storage. We directly use direct upload
-    # url to ensure we upload through encryption proxy.
-    def upload(key, io, checksum: nil, **)
-      wrapped.send(:instrument, :upload, key: key, checksum: checksum) do
-        url = url_for_direct_upload(key, expires_in: 1.hour)
-        data = Fog::Storage.parse_data(io)
-
-        headers = { 'Content-Type' => wrapped.send(:guess_content_type, io) }.merge(data[:headers])
-        if checksum
-          headers['ETag'] = wrapped.send(:convert_base64digest_to_hexdigest, checksum)
-        end
-
-        response = Typhoeus::Request.new(
-          url,
-          method: :put,
-          body: data[:body].read,
-          headers: headers
-        ).run
-
-        if response.success?
-          response
-        else
-          raise ActiveStorage::IntegrityError
-        end
-      end
-    end
-
     private
 
-    # This method is responsible for reading from object storage. We use url method
-    # on the service to ensure we download through encryption proxy.
     def object_for(key, &block)
       blob_url = url(key)
       if block_given?