Document URL: 

https://docs.openshift.com/container-platform/4.14/installing/installing_vsphere/preparing-to-install-on-vsphere.html#installation-vsphere-infrastructure_preparing-to-install-on-vsphere

Section Number and Name: 
VMware vSphere infrastructure requirements / Table 2. Minimum supported vSphere version for VMware components

Describe the issue: 
We don't need to specify the "Storage with in-tree drivers" requirement in "Table 2. Minimum supported vSphere version for VMware components", especially from 4.14, in which the CSIMigration is enabled by default. We can remove it.