correct libngu submodule; remove Export XPUB option from miniscript

docs/miniscript.md

@@ -9,6 +9,9 @@ support Miniscript and MiniTapscript.
 * only [descriptors](https://github.com/bitcoin/bips/blob/master/bip-0380.mediawiki) allowed for import
 * `Settings` -> `Miniscript` -> `<name>` -> `Descriptors`
 * only [descriptors](https://github.com/bitcoin/bips/blob/master/bip-0380.mediawiki) are exported
+* export extended keys to participate in miniscript:
+    * `Advanced/Tools` -> `Export Wallet` -> `Generic JSON`
+    * `Settings` -> `Multisig Wallets` -> `Export XPUB`
 
 ## Address Explorer
 

external/libngu

@@ -1 +1 @@
-Subproject commit d8b4e2added17082c0b6cc091a400204c2098c8b
+Subproject commit 7bdb03864630ff68b143e3e5b4521ca3ef6588cc

shared/miniscript.py

@@ -631,8 +631,6 @@ async def delete_all(*a):
 class MiniscriptMenu(MenuSystem):
     @classmethod
     def construct(cls):
-        from multisig import export_multisig_xpubs
-
         if not MiniScriptWallet.exists():
             rv = [MenuItem('(none setup yet)', f=no_miniscript_yet)]
         else:
@@ -645,7 +643,6 @@ class MiniscriptMenu(MenuSystem):
         rv.append(MenuItem('Import from File', f=import_miniscript))
         rv.append(MenuItem('Import via NFC', f=import_miniscript_nfc,
                            predicate=lambda: NFC is not None))
-        rv.append(MenuItem('Export XPUB', f=export_multisig_xpubs))
         rv.append(MenuItem("DELETE ALL", f=delete_all))
 
         return rv