Deprecate API v2 (#7761)

* deprecate api-v2

* remove v2 test helpers

* remove unused string

test/api-legacy/subscriptions.js

@@ -1,50 +0,0 @@
-var app, payments;
-
-payments = require("../../website/server/controllers/payments");
-
-app = require("../../website/server/server");
-
-describe("Subscriptions", function() {
-  before(function(done) {
-    return registerNewUser(done, true);
-  });
-  return it("Handles unsubscription", function(done) {
-    var cron;
-    cron = function() {
-      user.lastCron = moment().subtract(1, "d");
-      return user.fns.cron();
-    };
-    expect(user.purchased.plan.customerId).to.not.exist;
-    payments.createSubscription({
-      user: user,
-      customerId: "123",
-      paymentMethod: "Stripe",
-      sub: {
-        key: 'basic_6mo'
-      }
-    });
-    expect(user.purchased.plan.customerId).to.exist;
-    shared.wrap(user);
-    cron();
-    expect(user.purchased.plan.customerId).to.exist;
-    payments.cancelSubscription({
-      user: user
-    });
-    cron();
-    expect(user.purchased.plan.customerId).to.exist;
-    expect(user.purchased.plan.dateTerminated).to.exist;
-    user.purchased.plan.dateTerminated = moment().subtract(2, "d");
-    cron();
-    expect(user.purchased.plan.customerId).to.not.exist;
-    payments.createSubscription({
-      user: user,
-      customerId: "123",
-      paymentMethod: "Stripe",
-      sub: {
-        key: 'basic_6mo'
-      }
-    });
-    expect(user.purchased.plan.dateTerminated).to.not.exist;
-    return done();
-  });
-});