chore(core): delete unused variables

core/src/apps/bitcoin/common.py

@@ -37,6 +37,8 @@ class SigHashType(IntEnum):
 
     # Signature hash type with the same semantics as SIGHASH_ALL. Used in some
     # Bitcoin-like altcoins for replay protection.
+    # NOTE: this seems to be unused, but when deleted, it breaks some tests
+    # (test_send_bch_external_presigned and test_send_btg_external_presigned)
     SIGHASH_ALL_FORKID = 0x41
 
     @classmethod

core/src/apps/bitcoin/get_ownership_proof.py

@@ -16,9 +16,6 @@ if TYPE_CHECKING:
     from apps.common.keychain import Keychain
     from .authorization import CoinJoinAuthorization
 
-# Maximum number of characters per line in monospace font.
-_MAX_MONO_LINE = 18
-
 
 @with_keychain
 async def get_ownership_proof(

core/src/apps/cardano/helpers/bech32.py

@@ -12,7 +12,6 @@ HRP_SCRIPT_HASH = "script"
 HRP_KEY_HASH = "addr_vkh"
 HRP_SHARED_KEY_HASH = "addr_shared_vkh"
 HRP_STAKE_KEY_HASH = "stake_vkh"
-HRP_STAKE_SHARED_KEY_HASH = "stake_shared_vkh"
 HRP_REQUIRED_SIGNER_KEY_HASH = "req_signer_vkh"
 HRP_OUTPUT_DATUM_HASH = "datum"
 HRP_SCRIPT_DATA_HASH = "script_data"

core/src/apps/monero/signing/step_02_set_input.py

@@ -79,7 +79,7 @@ async def set_input(
     if src_entr.rct:
         vini.amount = 0
 
-    # Serialize `vini` with variant code for TxinToKey (prefix = TxinToKey.VARIANT_CODE).
+    # Serialize `vini` with variant code for TxinToKey (prefix = 2).
     # The binary `vini_bin` is later sent to step 4 and 9 with its hmac,
     # where it is checked and directly used.
     vini_bin = serialize.dump_msg(vini, preallocate=64, prefix=b"\x02")

core/src/apps/monero/xmr/serialize_messages/base.py

@@ -13,14 +13,12 @@ _c32 = const(32)
 
 class Hash(BlobType):
     __slots__ = ("data",)
-    DATA_ATTR = "data"
     FIX_SIZE = _c1
     SIZE = _c32
 
 
 class ECKey(BlobType):
     __slots__ = ("bytes",)
-    DATA_ATTR = "bytes"
     FIX_SIZE = _c1
     SIZE = _c32
 

core/src/apps/monero/xmr/serialize_messages/tx_prefix.py

@@ -1,5 +1,3 @@
-from micropython import const
-
 from apps.monero.xmr.serialize.base_types import UVarintType
 from apps.monero.xmr.serialize.message_types import ContainerType, MessageType
 from apps.monero.xmr.serialize_messages.base import KeyImage
@@ -7,7 +5,6 @@ from apps.monero.xmr.serialize_messages.base import KeyImage
 
 class TxinToKey(MessageType):
     __slots__ = ("amount", "key_offsets", "k_image")
-    VARIANT_CODE = const(0x2)
 
     @classmethod
     def f_specs(cls) -> tuple:

core/src/apps/stellar/consts.py

@@ -75,11 +75,6 @@ op_wire_types = [
     MessageType.StellarSetOptionsOp,
 ]
 
-# https://github.com/stellar/go/blob/e0ffe19f58879d3c31e2976b97a5bf10e13a337b/xdr/xdr_generated.go#L584
-ASSET_TYPE_NATIVE = const(0)
-ASSET_TYPE_ALPHANUM4 = const(1)
-ASSET_TYPE_ALPHANUM12 = const(2)
-
 # https://www.stellar.org/developers/guides/concepts/accounts.html#balance
 # https://github.com/stellar/go/blob/3d2c1defe73dbfed00146ebe0e8d7e07ce4bb1b6/amount/main.go#L23
 AMOUNT_DECIMALS = const(7)

core/src/apps/tezos/helpers.py

@@ -72,11 +72,6 @@ PUBLIC_KEY_TAG_TO_SIZE = {
     2: _P256_PUBLIC_KEY_SIZE,
 }
 
-OP_TAG_ENDORSEMENT = const(0)
-OP_TAG_SEED_NONCE_REVELATION = const(1)
-OP_TAG_DOUBLE_ENDORSEMENT_EVIDENCE = const(2)
-OP_TAG_DOUBLE_BAKING_EVIDENCE = const(3)
-OP_TAG_ACTIVATE_ACCOUNT = const(4)
 OP_TAG_PROPOSALS = const(5)
 OP_TAG_BALLOT = const(6)
 OP_TAG_REVEAL = const(107)

core/src/trezor/wire/codec_v1.py

@@ -16,7 +16,6 @@ _REP_INIT_DATA = const(9)  # offset of data in the initial report
 _REP_CONT_DATA = const(1)  # offset of data in the continuation report
 
 SESSION_ID = const(0)
-INVALID_TYPE = const(-1)
 
 
 class CodecError(Exception):