Deprecate and remove hardware module from CLI

nucypher/cli/hardware/backends.py

@@ -1,90 +0,0 @@
-"""
-This file is part of nucypher.
-
-nucypher is free software: you can redistribute it and/or modify
-it under the terms of the GNU Affero General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-nucypher is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU Affero General Public License for more details.
-
-You should have received a copy of the GNU Affero General Public License
-along with nucypher.  If not, see <https://www.gnu.org/licenses/>.
-"""
-
-
-from abc import ABC, abstractmethod
-from collections import namedtuple
-
-
-class TrustedDevice(ABC):
-    """
-    An Abstract Base Class for implementing wallet-like functions for stakers
-    utilizing trusted hardware devices.
-    This class specifies a few basic functions required for staking on the
-    NuCypher network.
-
-    TODO: Define an abstractmethod for BIP44 derivation?
-    """
-
-    # We intentionally keep the address index off the path so that the
-    # subclass interfaces can handle which address index to use.
-    DEFAULT_BIP44_PATH = "m/44'/60'/0'/0"
-
-    Signature = namedtuple('Signature', ['signature', 'address'])
-
-    class DeviceError(Exception):
-        pass
-
-    @abstractmethod
-    def _handle_device_call(device_func):
-        """
-        Abstract method useful as a decorator for device API calls to handle
-        any side effects that occur during execution (exceptions, etc).
-        """
-        raise NotImplementedError
-
-    @abstractmethod
-    def _reset(self):
-        """
-        Abstract method for resetting the device to a state that's ready to
-        be configured for staking. This may or may not wipe the device,
-        therefore, appropriate care should be taken.
-        """
-        raise NotImplementedError
-
-    @abstractmethod
-    def configure(self):
-        """
-        Abstract method for configuring the device to work with the NuCypher
-        network. It should be assumed that this is configuring a dedicated
-        device intended for staking _only_.
-        """
-        raise NotImplementedError
-
-    @abstractmethod
-    def sign_message(self, message: bytes, address_index: int = 0):
-        """
-        Abstract method for signing any arbitrary message via a device's API.
-
-        TODO: What format should signatures output?
-        """
-        raise NotImplementedError
-
-    @abstractmethod
-    def verify_message(self, signature: bytes, messsage: bytes, address: str):
-        """
-        Abstract method for verifying a signature via a device's API.
-        """
-        raise NotImplementedError
-
-    @abstractmethod
-    def sign_eth_transaction(self):
-        """
-        Abstract method for signing an Ethereum transaction via a device's
-        API.
-        """
-        raise NotImplementedError