[Future-Proof] By default, new networks should have hardware wallets disabled about mycrypto

[trustfarm-dev]

@tayvano I think Hw wallet is needs for supports.
Because they just provide private key encryptions.
So, If there's default / general path for storing the Private Key, then Trezor should inform it.
I think , It is not a good approach , What Trezor not support general key storage for several coin, MEW doesn't accept Coin wallet.

it just change using default path of Trezor then it is enough , not removing musicoin lists

Finally, like this restriction , It makes another version of forking of MEW.
@Immartin
And, Now Musicoin doesn't support of EIP-155 now. but, It is same as early of ETH.
Even though it doesn't support EIP-155, replay problem is very rare and all other token on MEW .
they support EIP-155 now. So, attaching before replay attack preventing contract and New version of Musicnode support EIP-155, I think there's no problem on ETH / ETC in MEW tokens.