Remove the unused machine volume-driver

The driver is now hardcoded again, and there can only be
one type of mounts at a time (which one changes over time)

Revert "Make it possible to select the volume driver"
This reverts commit 6630e5cf66.

Signed-off-by: Anders F Björklund <anders.f.bjorklund@gmail.com>

cmd/podman/machine/init.go

@@ -123,10 +123,6 @@ func init() {
 		"USB Host passthrough: bus=$1,devnum=$2 or vendor=$1,product=$2")
 	_ = initCmd.RegisterFlagCompletionFunc(USBFlagName, completion.AutocompleteDefault)
 
-	VolumeDriverFlagName := "volume-driver"
-	flags.StringVar(&initOpts.VolumeDriver, VolumeDriverFlagName, "", "Optional volume driver")
-	_ = initCmd.RegisterFlagCompletionFunc(VolumeDriverFlagName, completion.AutocompleteDefault)
-
 	IgnitionPathFlagName := "ignition-path"
 	flags.StringVar(&initOpts.IgnitionPath, IgnitionPathFlagName, "", "Path to ignition file")
 	_ = initCmd.RegisterFlagCompletionFunc(IgnitionPathFlagName, completion.AutocompleteDefault)

docs/source/markdown/podman-machine-init.1.md.in

@@ -160,10 +160,6 @@ Example: `-v "$HOME/git:$HOME/git:ro,security_model=none"`
 Default volume mounts are defined in *containers.conf*.  Unless changed, the default values
 is `$HOME:$HOME`.
 
-#### **--volume-driver**
-
-Driver to use for mounting volumes from the host, such as `virtfs`.
-
 ## EXAMPLES
 
 Initialize the default Podman machine, pulling the content from the internet.

pkg/machine/define/initopts.go

@@ -8,7 +8,6 @@ type InitOptions struct {
 	IgnitionPath       string
 	Image              string
 	Volumes            []string
-	VolumeDriver       string
 	IsDefault          bool
 	Memory             uint64
 	Name               string