dialogs: Remove obsolete btrfs subvolume warnings

usr/lib/live-installer/frontend/gtk_interface.py

@@ -898,27 +898,12 @@ def wizard_cb(self, widget, goback, data=None):
  if partition.format_as is None or partition.format_as == "":
  ErrorDialog(_("Installer"), _("Please indicate a filesystem to format the root (/) partition with before proceeding."))
  return
- if partition.mount_as == "/@":
- if partition.format_as != "btrfs":
- ErrorDialog(_("Installer"), _("A root subvolume (/@) requires to format the partition with btrfs."))
- return
- found_root_partition = True
- if partition.mount_as == "/@home":
- if partition.format_as == "btrfs":
- continue;
- if partition.type == "btrfs" and (partition.format_as == None or partition.format_as == ""):
- continue;
- ErrorDialog(_("Installer"), _("A home subvolume (/@home) requires the use of a btrfs formatted partition."))
- return
 
  if not found_root_partition:
  ErrorDialog(_("Installer"), "<b>%s</b>" % _("Please select a root (/) partition."), _(
  "A root partition is needed to install Linux Mint on.\n\n"
  " - Mount point: /\n - Recommended size: 30GB\n"
- " - Recommended filesystem format: ext4\n\n"
- "Note: The timeshift btrfs snapshots feature requires the use of:\n"
- " - subvolume Mount-point /@\n"
- " - btrfs as filesystem format\n"))
+ " - Recommended filesystem format: ext4\n"))
  return
 
  if self.setup.gptonefi: