Information
Ensure that no device is connected to a virtual machine if it is not required. For example, floppy, serial and parallel ports are rarely used for virtual machines in a datacenter environment, and CD/DVD drives are usually connected only temporarily during software installation.
Solution
The VM must be powered off in order to remove a floppy drive.
From the vSphere Client select the Virtual Machine right click and go to Edit Settings. Select the floppy drive and click remove then OK.
or
From a PowerCLI command prompt while connected to the ESXi host or vCenter server run the following command:
Get-VM 'VM Name' | Get-FloppyDrive | Remove-FloppyDrive