code: func (f *wsClientFilter) removeAddressStr(s string, params *chaincfg.Params) {
  	a, err := btcutil.DecodeAddress(s, params)
  	if err == nil {
  		f.removeAddress(a)
  	} else {
  		delete(f.otherAddresses, s)
  	}
  }
docs: // removeAddressStr parses an address from a string and then removes it from the
  // wsClientFilter using removeAddress.
  //
  // NOTE: This extension was ported from github.com/decred/dcrd