message: Remove bech32 prefixes from non-segwit coins
  Bitcoin Cash, Bitcoin SV, and Zcash never activated the segwit softfork
  and support neither the bech32 address format nor witness programs.
  Issue:
diff: @@ -27,7 +27,6 @@ module.exports = {
  },
  bitcoincash: {
  messagePrefix: '\x18Bitcoin Signed Message:\n',
  - bech32: 'bc',
  bip32: {
  public: 0x0488b21e,
  private: 0x0488ade4
  @@ -40,7 +39,6 @@ module.exports = {
  },
  bitcoincashTestnet: {
  messagePrefix: '\x18Bitcoin Signed Message:\n',
  - bech32: 'tb',
  bip32: {
  public: 0x043587cf,
  private: 0x04358394
  @@ -52,7 +50,6 @@ module.exports = {
  },
  bitcoinsv: {
  messagePrefix: '\x18Bitcoin Signed Message:\n',
  - bech32: 'bc',
  bip32: {
  public: 0x0488b21e,
  private: 0x0488ade4
  @@ -65,7 +62,6 @@ module.exports = {
  },
  bitcoinsvTestnet: {
  messagePrefix: '\x18Bitcoin Signed Message:\n',
  - bech32: 'tb',
  bip32: {
  public: 0x043587cf,
  private: 0x04358394
  @@ -77,7 +73,6 @@ module.exports = {
  },
  zcash: {
  messagePrefix: '\x18ZCash Signed Message:\n',
  - bech32: 'bc',
  bip32: {
  public: 0x0488b21e,
  private: 0x0488ade4
  @@ -98,7 +93,6 @@ module.exports = {
  },
  zcashTest: {
  messagePrefix: '\x18ZCash Signed Message:\n',
  - bech32: 'tb',
  bip32: {
  public: 0x043587cf,
  private: 0x04358394
  