Remove broken patch

This was replacing the wrong method.

Signed-off-by: Stephen Finucane <[email protected]>

Author: stephenfin

scripts/rest_urllib_headers.diff

@@ -80,9 +80,5 @@ git apply "${SCRIPT_ROOT}/rest_client_patch.diff"
 # once we upgrade to a version of swagger-codegen that includes it (version>= 6.6.0).
 # See https://github.com/OpenAPITools/openapi-generator/pull/15283
 git apply "${SCRIPT_ROOT}/rest_sni_patch.diff"
-# The following is commented out due to:
-# AttributeError: 'RESTResponse' object has no attribute 'headers'
-# OpenAPI client generator prior to 6.4.0 uses deprecated urllib3 APIs.
-# git apply "${SCRIPT_ROOT}/rest_urllib_headers.diff"
 
 echo ">>> Done."