remove two dependencies from readme (#436)

Author: Mat001

README.md

@@ -227,10 +227,6 @@ This software incorporates code from the following open source projects:
 
 requests (Apache-2.0 License: https://github.com/psf/requests/blob/master/LICENSE)
 
-pyOpenSSL (Apache-2.0 License https://github.com/pyca/pyopenssl/blob/main/LICENSE)
-
-cryptography (Apache-2.0 https://github.com/pyca/cryptography/blob/main/LICENSE.APACHE)
-
 idna (BSD 3-Clause License https://github.com/kjd/idna/blob/master/LICENSE.md)
 
 ### Other Optimizely SDKs