feat(api): remove Stainless attribution from readme

Author: stainless-app[bot]

.stats.yml

@@ -1,4 +1,4 @@
 configured_endpoints: 42
 openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/imagekit-inc%2Fimagekit-d1a3e6dfc45ae832b6b14a0aef25878985c679fa9f48c1470df188b1578ba648.yml
 openapi_spec_hash: 1d382866fce3284f26d341f112988d9d
-config_hash: 5f7498f5ea66e8a544c6c37b10f77467
+config_hash: ff23f46fe08ef3f43c57c8cf13eff3a1

README.md

@@ -2,8 +2,6 @@
 
 The Image Kit Ruby library provides convenient access to the Image Kit REST API from any Ruby 3.2.0+ application. It ships with comprehensive types & docstrings in Yard, RBS, and RBI – [see below](https://github.com/imagekit-developer/imagekit-ruby#Sorbet) for usage with Sorbet. The standard library's `net/http` is used as the HTTP transport, with connection pooling via the `connection_pool` gem.
 
-It is generated with [Stainless](https://www.stainless.com/).
-
 ## Documentation
 
 Documentation for releases of this gem can be found [on RubyDoc](https://gemdocs.org/gems/imagekit).