src: make flake8 happy

src/apps/common/request_passphrase.py

@@ -1,4 +1,4 @@
-from trezor import loop, ui, wire
+from trezor import ui, wire
 from trezor.messages import ButtonRequestType, wire_types
 from trezor.messages.ButtonRequest import ButtonRequest
 from trezor.messages.FailureType import ActionCancelled, ProcessError

src/apps/management/reset_device.py

@@ -187,6 +187,7 @@ async def check_mnemonic(ctx, mnemonic: str) -> bool:
 
     return True
 
+
 @ui.layout
 async def check_word(ctx, words: list, index: int):
     keyboard = MnemonicKeyboard('Type the %s word:' % format_ordinal(index + 1))

src/trezor/wire/codec_v1.py

@@ -1,7 +1,7 @@
 from micropython import const
 import ustruct
 
-from trezor import io, ui
+from trezor import io
 from trezor import loop
 from trezor import utils