cleanup samples
cleanup samples

CedarLogic/azure-activedirectory-library-for-nodejs,yugangw-msft/azure-activedirectory-library-for-nodejs,jmspring/azure-activedirectory-library-for-nodejs,AzureAD/azure-activedirectory-library-for-nodejs,AzureAD/azure-activedirectory-library-for-nodejs,yugangw-msft/azure-activedirectory-library-for-nodejs,AzureAD/azure-activedirectory-library-for-nodejs,CedarLogic/azure-activedirectory-library-for-nodejs,jmspring/azure-activedirectory-library-for-nodejs