Clean up flags after all

enterprise/server/remote_execution/containers/firecracker/firecracker.go

@@ -79,9 +79,6 @@ var (
 	firecrackerCgroupVersion  = flag.String("executor.firecracker_cgroup_version", "", "Specifies the cgroup version for firecracker to use.")
 	debugStreamVMLogs         = flag.Bool("executor.firecracker_debug_stream_vm_logs", false, "Stream firecracker VM logs to the terminal.")
 	debugTerminal             = flag.Bool("executor.firecracker_debug_terminal", false, "Run an interactive terminal in the Firecracker VM connected to the executor's controlling terminal. For debugging only.")
-	enableVBD                 = flag.Bool("executor.firecracker_enable_vbd", false, "Enables the FUSE-based virtual block device interface for block devices.")
-	EnableRootfs              = flag.Bool("executor.firecracker_enable_merged_rootfs", false, "Merges the containerfs and scratchfs into a single rootfs, removing the need to use overlayfs for the guest's root filesystem. Requires NBD to also be enabled.")
-	enableUFFD                = flag.Bool("executor.firecracker_enable_uffd", false, "Enables userfaultfd for firecracker VMs.")
 	dieOnFirecrackerFailure   = flag.Bool("executor.die_on_firecracker_failure", false, "Makes the host executor process die if any command orchestrating or running Firecracker fails. Useful for capturing failures preemptively. WARNING: using this option MAY leave the host machine in an unhealthy state on Firecracker failure; some post-hoc cleanup may be necessary.")
 	workspaceDiskSlackSpaceMB = flag.Int64("executor.firecracker_workspace_disk_slack_space_mb", 2_000, "Extra space to allocate to firecracker workspace disks, in megabytes. ** Experimental **")
 	healthCheckInterval       = flag.Duration("executor.firecracker_health_check_interval", 10*time.Second, "How often to run VM health checks while tasks are executing.")