remove the lxml builds because they never worked, allow pypy3 to fail (for now)
remove the lxml builds because they never worked, allow pypy3 to fail (for now)

erjohnso/libcloud,vongazman/libcloud,StackPointCloud/libcloud,vongazman/libcloud,StackPointCloud/libcloud,ByteInternet/libcloud,apache/libcloud,andrewsomething/libcloud,Scalr/libcloud,ZuluPro/libcloud,erjohnso/libcloud,ZuluPro/libcloud,ByteInternet/libcloud,andrewsomething/libcloud,andrewsomething/libcloud,Kami/libcloud,vongazman/libcloud,Kami/libcloud,pquentin/libcloud,ByteInternet/libcloud,pquentin/libcloud,ZuluPro/libcloud,Kami/libcloud,erjohnso/libcloud,pquentin/libcloud,mistio/libcloud,Scalr/libcloud,apache/libcloud,mistio/libcloud,apache/libcloud,StackPointCloud/libcloud,Scalr/libcloud,mistio/libcloud