Delete all Braintree code

We never launched this, don't planning on launching it now anyway, and it's rotted over the past two years anyway.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=202993577

java/google/registry/config/RegistryConfig.java

@@ -32,14 +32,11 @@ import java.lang.annotation.Documented;
 import java.lang.annotation.Retention;
 import java.net.URI;
 import java.net.URL;
-import java.util.Map;
-import java.util.Map.Entry;
 import java.util.Optional;
 import javax.annotation.Nullable;
 import javax.inject.Named;
 import javax.inject.Qualifier;
 import javax.inject.Singleton;
-import org.joda.money.CurrencyUnit;
 import org.joda.time.DateTimeConstants;
 import org.joda.time.Duration;
 
@@ -887,51 +884,6 @@ public final class RegistryConfig {
       return null;
     }
 
-    /**
-     * Returns Braintree Merchant Account IDs for each supported currency.
-     *
-     * @see google.registry.ui.server.registrar.RegistrarPaymentAction
-     * @see google.registry.ui.server.registrar.RegistrarPaymentSetupAction
-     */
-    @Provides
-    @Config("braintreeMerchantAccountIds")
-    public static ImmutableMap<CurrencyUnit, String> provideBraintreeMerchantAccountId(
-        RegistryConfigSettings config) {
-      Map<String, String> merchantAccountIds = config.braintree.merchantAccountIdsMap;
-      ImmutableMap.Builder<CurrencyUnit, String> builder = new ImmutableMap.Builder<>();
-      for (Entry<String, String> entry : merchantAccountIds.entrySet()) {
-        builder.put(CurrencyUnit.of(entry.getKey()), entry.getValue());
-      }
-      return builder.build();
-    }
-
-    /**
-     * Returns Braintree Merchant ID of Registry, used for accessing Braintree API.
-     *
-     * <p>This is a base32 value copied from the Braintree website.
-     *
-     * @see google.registry.braintree.BraintreeModule
-     */
-    @Provides
-    @Config("braintreeMerchantId")
-    public static String provideBraintreeMerchantId(RegistryConfigSettings config) {
-      return config.braintree.merchantId;
-    }
-
-    /**
-     * Returns Braintree Public Key of Registry, used for accessing Braintree API.
-     *
-     * <p>This is a base32 value copied from the Braintree website.
-     *
-     * @see google.registry.braintree.BraintreeModule
-     * @see google.registry.keyring.api.Keyring#getBraintreePrivateKey()
-     */
-    @Provides
-    @Config("braintreePublicKey")
-    public static String provideBraintreePublicKey(RegistryConfigSettings config) {
-      return config.braintree.publicKey;
-    }
-
     /**
      * Disclaimer displayed at the end of WHOIS query results.
      *

java/google/registry/config/RegistryConfigSettings.java

@@ -15,7 +15,6 @@
 package google.registry.config;
 
 import java.util.List;
-import java.util.Map;
 
 /** The POJO that YAML config files are deserialized into. */
 public class RegistryConfigSettings {
@@ -33,7 +32,6 @@ public class RegistryConfigSettings {
   public RegistrarConsole registrarConsole;
   public Monitoring monitoring;
   public Misc misc;
-  public Braintree braintree;
   public Kms kms;
   public RegistryTool registryTool;
 
@@ -158,13 +156,6 @@ public class RegistryConfigSettings {
     public int asyncDeleteDelaySeconds;
   }
 
-  /** Configuration for Braintree credit card payment processing. */
-  public static class Braintree {
-    public String merchantId;
-    public String publicKey;
-    public Map<String, String> merchantAccountIdsMap;
-  }
-
   /** Configuration options for the registry tool. */
   public static class RegistryTool {
     public String clientSecretFilename;

java/google/registry/config/files/default-config.yaml

@@ -246,21 +246,6 @@ misc:
   # hosts from being used on domains.
   asyncDeleteDelaySeconds: 90
 
-# Braintree is a credit card payment processor that is used on the registrar
-# console to allow registrars to pay their invoices.
-braintree:
-  # Merchant ID of the Braintree account.
-  merchantId: example
-
-  # Public key used for accessing Braintree API (this is found on their site).
-  publicKey: example
-
-  # A map of JODA Money CurrencyUnits, specified in three letter ISO-4217
-  # format, to Braintree account IDs (each account is limited to a single
-  # currency). For example, one entry might be:
-  #   USD: accountIdUsingUSD
-  merchantAccountIdsMap: {}
-
 kms:
   # GCP project containing the KMS keyring. Should only be used for KMS in
   # order to keep a simple locked down IAM configuration.

java/google/registry/config/files/nomulus-config-production-sample.yaml

@@ -57,15 +57,5 @@ registrarConsole:
 misc:
   sheetExportId: placeholder
 
-# You only need to specify this section if using Braintree.
-braintree:
-  merchantId: placeholder
-  publicKey: placeholder
-  # Only include currencies that you use.
-  merchantAccountIdsMap:
-    EUR: placeholder
-    JPY: placeholder
-    USD: placeholder
-
 kms:
   projectId: placeholder

java/google/registry/config/files/nomulus-config-unittest.yaml

@@ -19,8 +19,3 @@ caching:
   staticPremiumListMaxCachedEntries: 50
   eppResourceCachingEnabled: true
   eppResourceCachingSeconds: 0
-
-braintree:
-  merchantAccountIdsMap:
-    USD: accountIdUsd
-    JPY: accountIdJpy