remove obsolete file
remove obsolete file

Azure/azure-sdk-for-ruby,wastoresh/azure-sdk-for-ruby,oaastest/azure-sdk-for-ruby,mstuefer/azure-sdk-for-ruby,theckman/azure-sdk-for-ruby,alexderz/azure-sdk-for-ruby,devigned/azure-sdk-for-ruby,devigned/azure-sdk-for-ruby,Azure/azure-sdk-for-ruby,kshmir/azure-sdk-for-ruby