removing classes from ./custom __init__.py to avoid confusion from exposing in two namespaces
removing classes from ./custom __init__.py to avoid confusion from exposing in two namespaces

Azure/azure-sdk-for-python,Azure/azure-sdk-for-python,AutorestCI/azure-sdk-for-python,Azure/azure-sdk-for-python,SUSE/azure-sdk-for-python,v-iam/azure-sdk-for-python,Azure/azure-sdk-for-python,lmazuel/azure-sdk-for-python