Delete old Stripe donation view

I'm in the process of replacing this with the new version of Stripe
Checkout, so I'm just going to delete it for now until that's done.

tildes/tildes/routes.py

@@ -106,9 +106,6 @@ def includeme(config: Configurator) -> None:
     # Route to expose metrics to Prometheus
     config.add_route("metrics", "/metrics")
 
-    # Route for Stripe donation processing page (POSTed to from docs site)
-    config.add_route("donate_stripe", "/donate_stripe")
-
     # Add all intercooler routes under the /api/web path
     with config.route_prefix_context("/api/web"):
         add_intercooler_routes(config)

tildes/tildes/views/donate.py

@@ -1,60 +0,0 @@
-# Copyright (c) 2018 Tildes contributors <code@tildes.net>
-# SPDX-License-Identifier: AGPL-3.0-or-later
-
-"""The view for donating via Stripe."""
-
-import stripe
-from marshmallow.fields import Email, Float, String
-from marshmallow.validate import OneOf, Range
-from pyramid.httpexceptions import HTTPInternalServerError
-from pyramid.request import Request
-from pyramid.security import NO_PERMISSION_REQUIRED
-from pyramid.view import view_config
-from webargs.pyramidparser import use_kwargs
-
-from tildes.metrics import incr_counter
-from tildes.views.decorators import rate_limit_view
-
-
-@view_config(
-    route_name="donate_stripe",
-    request_method="POST",
-    renderer="donate_stripe.jinja2",
-    permission=NO_PERMISSION_REQUIRED,
-    require_csrf=False,
-)
-@use_kwargs(
-    {
-        "stripe_token": String(required=True),
-        "donator_email": Email(required=True),
-        "amount": Float(required=True, validate=Range(min=1.0)),
-        "currency": String(required=True, validate=OneOf(("CAD", "USD"))),
-    }
-)
-@rate_limit_view("donate")
-def post_donate_stripe(
-    request: Request, stripe_token: str, donator_email: str, amount: int, currency: str
-) -> dict:
-    """Process a Stripe donation."""
-    try:
-        stripe.api_key = request.registry.settings["api_keys.stripe"]
-    except KeyError:
-        raise HTTPInternalServerError
-
-    incr_counter("donations", type="stripe")
-
-    payment_successful = True
-    try:
-        stripe.Charge.create(
-            source=stripe_token,
-            amount=int(amount * 100),
-            currency=currency,
-            receipt_email=donator_email,
-            description="One-time donation",
-            statement_descriptor="Donation - tildes.net",
-        )
-    except stripe.error.StripeError:
-        incr_counter("donation_failures", type="stripe")
-        payment_successful = False
-
-    return {"payment_successful": payment_successful}