Remove enforcement date from the SslServerInitializer (#1117)

The enforcement data has passed and ICANN has confirmed that their web
WHOIS prober conforms to our requirements.

<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/google/nomulus/1117)
<!-- Reviewable:end -->

proxy/src/main/java/google/registry/proxy/EppProtocolModule.java

@@ -50,7 +50,6 @@ import javax.inject.Named;
 import javax.inject.Provider;
 import javax.inject.Qualifier;
 import javax.inject.Singleton;
-import org.joda.time.DateTime;
 
 /** A module that provides the {@link FrontendProtocol} used for epp protocol. */
 @Module
@@ -160,19 +159,11 @@ public final class EppProtocolModule {
   @Provides
   @EppProtocol
   static SslServerInitializer<NioSocketChannel> provideSslServerInitializer(
-      ProxyConfig config,
       SslProvider sslProvider,
       Supplier<PrivateKey> privateKeySupplier,
-      Supplier<ImmutableList<X509Certificate>> certificatesSupplier,
-      Clock clock) {
+      Supplier<ImmutableList<X509Certificate>> certificatesSupplier) {
     return new SslServerInitializer<>(
-        true,
-        false,
-        sslProvider,
-        privateKeySupplier,
-        certificatesSupplier,
-        DateTime.parse(config.tlsEnforcementStartTime),
-        clock);
+        true, false, sslProvider, privateKeySupplier, certificatesSupplier);
   }
 
   @Provides

proxy/src/main/java/google/registry/proxy/ProxyConfig.java

@@ -48,7 +48,6 @@ public class ProxyConfig {
   public WebWhois webWhois;
   public HttpsRelay httpsRelay;
   public Metrics metrics;
-  public String tlsEnforcementStartTime;
 
   /** Configuration options that apply to GCS. */
   public static class Gcs {

proxy/src/main/java/google/registry/proxy/WebWhoisProtocolsModule.java

@@ -21,8 +21,6 @@ import dagger.multibindings.IntoSet;
 import google.registry.networking.handler.SslServerInitializer;
 import google.registry.proxy.Protocol.FrontendProtocol;
 import google.registry.proxy.handler.WebWhoisRedirectHandler;
-import google.registry.util.Clock;
-import google.registry.util.DateTimeUtils;
 import io.netty.channel.ChannelHandler;
 import io.netty.channel.socket.nio.NioSocketChannel;
 import io.netty.handler.codec.http.HttpServerCodec;
@@ -135,15 +133,8 @@ public final class WebWhoisProtocolsModule {
   static SslServerInitializer<NioSocketChannel> provideSslServerInitializer(
       SslProvider sslProvider,
       Supplier<PrivateKey> privateKeySupplier,
-      Supplier<ImmutableList<X509Certificate>> certificatesSupplier,
-      Clock clock) {
+      Supplier<ImmutableList<X509Certificate>> certificatesSupplier) {
     return new SslServerInitializer<>(
-        false,
-        false,
-        sslProvider,
-        privateKeySupplier,
-        certificatesSupplier,
-        DateTimeUtils.END_OF_TIME,
-        clock);
+        false, false, sslProvider, privateKeySupplier, certificatesSupplier);
   }
 }

proxy/src/main/java/google/registry/proxy/config/default-config.yaml

@@ -8,9 +8,6 @@
 # GCP project ID
 projectId: your-gcp-project-id
 
-# Time to begin enforcement of TLS versions and cipher suites.
-tlsEnforcementStartTime: "1970-01-01T00:00:00Z"
-
 # OAuth scope that the GoogleCredential will be constructed with. This list
 # should include all service scopes that the proxy depends on.
 gcpScopes: