fix, remove outdated config entries

fixes Qubes-Whonix-Gateway running
/usr/lib/open_link_confirmation https://some-link
and opens in DispVM instead

in other words, fixes:
Debugging information:
link_confirmation_vm_open_tool: qvm-open-in-vm
input_object_stripped_and_trimmed: http://127.0.0.1:7657/
link_confirmation_vm_open_tool_output: Usage: /usr/bin/qvm-open-in-vm [--view-only] vmname filename
link_confirmation_vm_open_tool_exit_code: 2

etc/open_link_confirm.d/31_default.conf

@@ -15,22 +15,3 @@ link_confirmation_for_links=1
 ## might get linked. Also local files can instruct your browser to fetch
 ## resources from the network.
 link_confirmation_for_files=1
-
-## Qubes-Whonix-Gateway only!
-## When links on Whonix-Gateway are clicked, they should not be opened on
-## Whonix-Gateway. This configures in which VM they should be opened.
-## If you set this to 'none', then links will not be opened.
-## Defaults to: anon-whonix
-#link_confirmation_target_vm="none"
-link_confirmation_target_vm="anon-whonix"
-
-## Qubes-Whonix-Gateway only!
-## Advanced users only!
-## When links on Whonix-Gateway are clicked
-## Could be set to either 'qvm-open-in-dvm' or 'qvm-open-in-vm'.
-## 'qvm-open-in-dvm' is currently untested and unsupported, because
-## Qubes-Whonix DispVM is not ready yet. See:
-## https://www.whonix.org/wiki/Qubes/Disposable_VM
-## Leave it set to 'qvm-open-in-vm' for now, unless you are an advanced user.
-#link_confirmation_vm_open_tool="qvm-open-in-dvm"
-link_confirmation_vm_open_tool="qvm-open-in-vm"