With the release of geth 1.9.0 (see https://blog.ethereum.org/2019/07/10/geth-v1-9-0/) - It is no longer necessary to naively support trezor or implement its firmware libraries within nucypher if we instead depend on geth for device compadability.

Impending Changes:

• Deprecate nucypher.cli.device (Keep TrustedDevice around for future feature-building) ([EPIC] NuCypher Staking Device Utility  #1052)
• Remove device from TransactingPower API, revisit signing method. (TransactingPower #1092)
• Remove device from Character APIs
• Remove device from CharacterConfiguration APIs
• Refactor CLI options and interactions to use geth implemented trezor support (Extract Stakeholder CLI and Deploy Actions #1056 )
  - [ ] Web3 geth client wallet endpoint scaffolding (until web3.py adoption)

Included in PR #1124