refactor: remove banks from payment methods, keep only actual payment methods (#471)

Remove 17 specific banks from payment_methods.json and replace with
'Transferencia bancaria' where no generic bank transfer option existed.

Banks are financial institutions, not payment methods. The specific bank
is a trade detail that sellers communicate during the trade.

Removed: National Bank of Canada (CAD), Banco de Chile, Banco Falabella
(CLP), Bancolombia, Davivienda (COP), N26 (EUR), Lloyds Bank (GBP),
Zenith Bank, Access Bank (NGN), Interbank, BCP (PEN), Banco Guayaquil,
Banco Pichincha, Banco Davivienda (USD), BDV, Mercantil, Banesco (VES)

Closes #470

Co-authored-by: mostronator <mostronator@users.noreply.github.com>

Author: Mostronator

assets/data/payment_methods.json

@@ -3,22 +3,22 @@
   "AUD": ["PayID", "Alipay", "Cash deposit", "Revolut", "Cash"],
   "BOB": ["QR", "Transferencia Bancaria", "Efectivo"],
   "BRL": ["PIX", "TED", "PicPay", "Depósito", "Cash"],
-  "CAD": ["Interac e-Transfer", "National Bank of Canada", "Any national bank", "Wise", "Revolut", "Cash"],
+  "CAD": ["Interac e-Transfer", "Any national bank", "Wise", "Revolut", "Cash"],
   "CHF": ["TWINT", "Cash"],
-  "CLP": ["Banco de Chile", "MACH", "Cuenta RUT", "Mercado Pago", "Banco Falabella", "Transferencia bancaria", "Efectivo"],
+  "CLP": ["MACH", "Cuenta RUT", "Mercado Pago", "Transferencia bancaria", "Efectivo"],
   "CRC": ["Bank transfer (IBAN)", "SINPE Móvil", "Cash"],
-  "COP": ["Nequi", "Daviplata", "PSE", "Bancolombia", "Llaves BRE-B", "Davivienda", "Efectivo"],
+  "COP": ["Nequi", "Daviplata", "PSE", "Llaves BRE-B", "Transferencia bancaria", "Efectivo"],
   "CUP": ["Transfermovil", "EnZona", "Tarjeta Clásica", "Saldo móvil", "MiTransfer", "Efectivo"],
-  "EUR": ["SEPA", "Revolut", "N26", "Bank Transfer", "Wise", "SEPA instant", "Bizum", "SEPA bank transfer", "Payoneer", "Cash"],
-  "GBP": ["Revolut", "Monzo", "Wise", "Lloyds Bank", "Any national bank", "Bank Transfer", "Cash"],
+  "EUR": ["SEPA", "Revolut", "Bank Transfer", "Wise", "SEPA instant", "Bizum", "SEPA bank transfer", "Payoneer", "Cash"],
+  "GBP": ["Revolut", "Monzo", "Wise", "Any national bank", "Bank Transfer", "Cash"],
   "JPY": ["PayPay", "Bank Transfer", "Cash"],
   "MLC": ["Transfermovil", "EnZona"],
   "MXN": ["SPEI", "CoDi", "Retiro Cajero BBVA", "Efectivo"],
-  "NGN": ["Zenith Bank", "Access Bank", "Bank Transfer", "Cash"],
-  "PEN": ["Yape", "Plin", "BCP", "QR Yape", "Interbank", "Cash"],
+  "NGN": ["Bank Transfer", "Cash"],
+  "PEN": ["Yape", "Plin", "QR Yape", "Transferencia bancaria", "Cash"],
   "PHP": ["Any national bank", "GCash", "Cash"],
   "PYG": ["SIPAP", "Transferencia bancaria", "Efectivo"],
-  "USD": ["Cash App", "Venmo", "Zelle", "PayPal", "Wise", "Payoneer", "Strike", "Revolut", "Banco Guayaquil", "Banco Pichincha", "Banco Davivienda", "N1CO", "Transfer365", "Cash"],
-  "VES": ["Pago Móvil", "Binance P2P", "BDV", "Mercantil", "Banesco", "Efectivo"],
+  "USD": ["Cash App", "Venmo", "Zelle", "PayPal", "Wise", "Payoneer", "Strike", "Revolut", "N1CO", "Transfer365", "Cash"],
+  "VES": ["Pago Móvil", "Binance P2P", "Transferencia bancaria", "Efectivo"],
   "default": ["Bank Transfer", "Cash in person"]
 }