Hello hrp,
You have two options here, you can either do:
Full Data Migration:
Put host in Maintenance Mode with Full Data Evacuation of the node - provided you have adequate remaining space and not using a RAID5 Storage Policy on any Objects as this requires 4 available nodes - Default vSAN Storage Policy is FTT=1 which only requires 3 available nodes.
Remove host from cluster and re-install ESXi.
Or
Reduced Redundancy
Ensure you take good back-ups of all data, put the host in Maintence Mode with 'Ensure Accessibility' (VMs will have no protection from failure until this host is back) and then re-install the ESXi host - this doesn't require emptying the drives.
Place a Member of vSAN Cluster in Maintenance Mode
Notes on re-installing boot medium:
https://kb.vmware.com/s/article/2059091
You don't necessarily need to remove it from vSphere inventory.
Bob