Merge pull request #598 from sdodsley/remove_pso

Remove Pure CSI driver

book/src/drivers.md

@@ -103,7 +103,6 @@ Name | CSI Driver Name | Compatible with CSI Version(s) | Description | Persiste
 [oVirt](https://github.com/openshift/ovirt-csi-driver) | `csi.ovirt.org` | v1.0 | A Container Storage Interface (CSI) Driver for [oVirt](https://ovirt.org)  | Persistent | Read/Write Single Pod | Yes | Block, File Storage
 [Portworx](https://github.com/libopenstorage/openstorage/tree/master/csi) | `pxd.portworx.com` | v1.4 | A Container Storage Interface (CSI) Driver for [Portworx](https://docs.portworx.com/portworx-install-with-kubernetes/storage-operations/csi/) | Persistent and Ephemeral | Read/Write Multiple Pods | Yes | Snapshot, Expansion, Raw Block, Cloning
 [Proxmox](https://github.com/sergelogvinov/proxmox-csi-plugin) | `csi.proxmox.sinextra.dev` | v1.9 | A Container Storage Interface (CSI) Driver for [Proxmox](https://www.proxmox.com/en/) | Persistent | Read/Write Single Pod | Yes | Expansion, Topology, Raw Block
-[Pure Storage CSI](https://github.com/purestorage/pso-csi)| `pure-csi` | [v1.0, v1.3] | A Container Storage Interface (CSI) Driver for Pure Storage's [Pure Service Orchestrator](https://purestorage.com/containers) | Persistent and Ephemeral | Read/Write Multiple Pods | Yes | Snapshot, Cloning, Raw Block, Topology, Expansion
 [QingCloud CSI](https://github.com/yunify/qingcloud-csi)| `disk.csi.qingcloud.com` | v1.1 | A Container Storage Interface (CSI) Driver for QingCloud Block Storage | Persistent | Read/Write Single Pod | Yes | Raw Block, Snapshot, Expansion, Cloning
 [QingStor CSI](https://github.com/yunify/qingstor-csi) | `neonsan.csi.qingstor.com` | v0.3, v1.1 | A Container Storage Interface (CSI) Driver for NeonSAN storage system | Persistent | Read/Write Multiple Pods | Yes | Raw Block, Snapshot, Expansion, Cloning
 [Qiniu Kodo CSI](https://github.com/qiniu/csi-driver) | `kodoplugin.storage.qiniu.com` | v1.6 | A Container Storage Interface (CSI) Driver for Qiniu Object Storage (Kodo) | Persistent | Read/Write Multiple Pods | Yes |