Remove old trampoline compatibility bits from invoices

bits 50/51 are now used on the network (as option_zeroconf)

electrum/lnutil.py

@@ -1097,20 +1097,6 @@ class LnFeatures(IntFlag):
     _ln_feature_contexts[OPTION_TRAMPOLINE_ROUTING_REQ] = (LNFC.INIT | LNFC.NODE_ANN | LNFC.INVOICE)
     _ln_feature_contexts[OPTION_TRAMPOLINE_ROUTING_OPT] = (LNFC.INIT | LNFC.NODE_ANN | LNFC.INVOICE)
 
-    # allow old Electrum wallets to pay us with trampoline
-    OPTION_TRAMPOLINE_ROUTING_REQ_COMPAT_ELECTRUM = 1 << 24
-    OPTION_TRAMPOLINE_ROUTING_OPT_COMPAT_ELECTRUM = 1 << 25
-
-    _ln_feature_contexts[OPTION_TRAMPOLINE_ROUTING_REQ_COMPAT_ELECTRUM] = (LNFC.INVOICE)
-    _ln_feature_contexts[OPTION_TRAMPOLINE_ROUTING_OPT_COMPAT_ELECTRUM] = (LNFC.INVOICE)
-
-    # allow old Phoenix wallets to pay us with trampoline
-    OPTION_TRAMPOLINE_ROUTING_REQ_COMPAT_ECLAIR = 1 << 50
-    OPTION_TRAMPOLINE_ROUTING_OPT_COMPAT_ECLAIR = 1 << 51
-
-    _ln_feature_contexts[OPTION_TRAMPOLINE_ROUTING_REQ_COMPAT_ECLAIR] = (LNFC.INVOICE)
-    _ln_feature_contexts[OPTION_TRAMPOLINE_ROUTING_OPT_COMPAT_ECLAIR] = (LNFC.INVOICE)
-
     OPTION_SHUTDOWN_ANYSEGWIT_REQ = 1 << 26
     OPTION_SHUTDOWN_ANYSEGWIT_OPT = 1 << 27
 

electrum/trampoline.py

@@ -102,11 +102,7 @@ def is_legacy_relay(invoice_features, r_tags) -> Tuple[bool, List[bytes]]:
     """
     invoice_features = LnFeatures(invoice_features)
     # trampoline-supporting wallets:
-    # OPTION_TRAMPOLINE_ROUTING_OPT_COMPAT_ECLAIR: old Phoenix/Eclair wallets
-    # OPTION_TRAMPOLINE_ROUTING_OPT_COMPAT_ELECTRUM: old Electrum wallets
-    if (invoice_features.supports(LnFeatures.OPTION_TRAMPOLINE_ROUTING_OPT)
-        or invoice_features.supports(LnFeatures.OPTION_TRAMPOLINE_ROUTING_OPT_COMPAT_ECLAIR)
-        or invoice_features.supports(LnFeatures.OPTION_TRAMPOLINE_ROUTING_OPT_COMPAT_ELECTRUM)):
+    if invoice_features.supports(LnFeatures.OPTION_TRAMPOLINE_ROUTING_OPT:
         # If there are no r_tags (routing hints) included, the wallet doesn't have
         # private channels and is probably directly connected to a trampoline node.
         # Any trampoline node should be able to figure out a path to the receiver and