esx: Drop check for auth and auth->cb
esx: Drop check for auth and auth->cb

Since they are done inside virAuthGetPassword and virAuthGetUsername
when needed.

Signed-off-by: Marcos Paulo de Souza <0b4ebe3a213a49a2bc3457b98408e6d86812eb46@gmail.com>

libvirt/libvirt,andreabolognani/libvirt,zippy2/libvirt,eskultety/libvirt,nertpinx/libvirt,andreabolognani/libvirt,libvirt/libvirt,eskultety/libvirt,andreabolognani/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,olafhering/libvirt,crobinso/libvirt,eskultety/libvirt,zippy2/libvirt,fabianfreyer/libvirt,libvirt/libvirt,nertpinx/libvirt,nertpinx/libvirt,fabianfreyer/libvirt,crobinso/libvirt,eskultety/libvirt,jfehlig/libvirt,jfehlig/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,zippy2/libvirt,jardasgit/libvirt,libvirt/libvirt,nertpinx/libvirt,eskultety/libvirt,crobinso/libvirt,olafhering/libvirt,jfehlig/libvirt,jardasgit/libvirt,olafhering/libvirt,zippy2/libvirt,andreabolognani/libvirt,andreabolognani/libvirt,jardasgit/libvirt,olafhering/libvirt,nertpinx/libvirt,fabianfreyer/libvirt,crobinso/libvirt