Remove enable_SSLv3 support from JRuby

The C implementation has not supported SSLv3 at all since #591, and
SSLv3 is disabled by default in java now
(http://www.oracle.com/technetwork/java/javase/documentation/cve-2014-3566-2342133.html)
so we can drop support from JRuby.

ext/puma_http11/org/jruby/puma/MiniSSL.java

@@ -153,13 +153,7 @@ public class MiniSSL extends RubyObject {
     sslCtx.init(kmf.getKeyManagers(), null, null);
     engine = sslCtx.createSSLEngine();
 
-    IRubyObject enableSSLv3 = miniSSLContext.callMethod(threadContext, "enable_SSLv3");
+    String[] protocols = new String[] { "TLSv1", "TLSv1.1", "TLSv1.2" };
-    String[] protocols;
-    if (enableSSLv3 instanceof RubyBoolean && enableSSLv3.isTrue()) {
-      protocols = new String[] { "SSLv2Hello", "SSLv3", "TLSv1", "TLSv1.1", "TLSv1.2" };
-    } else {
-      protocols = new String[] { "TLSv1", "TLSv1.1", "TLSv1.2" };
-    }
     engine.setEnabledProtocols(protocols);
     engine.setUseClientMode(false);
 

lib/puma/minissl.rb

@@ -95,11 +95,6 @@ module Puma
         # jruby-specific Context properties: java uses a keystore and password pair rather than a cert/key pair
         attr_reader :keystore
         attr_accessor :keystore_pass
-        attr_accessor :enable_SSLv3
-
-        def initialize
-          @enable_SSLv3 = false
-        end
 
         def keystore=(keystore)
           raise ArgumentError, "No such keystore file '#{keystore}'" unless File.exist? keystore

test/test_puma_server_ssl.rb

@@ -97,41 +97,4 @@ class TestPumaServerSSL < Test::Unit::TestCase
     end
   end
 
-  if defined?(JRUBY_VERSION)
-    def test_enabling_ssl_v3_support
-      @server.stop(true)
-      @ctx.enable_SSLv3 = true
-      @server = Puma::Server.new @app, @events
-      @server.add_ssl_listener @host, @port, @ctx
-      @server.run
-      @http.ssl_version='SSLv3'
-
-      body = nil
-      @http.start do
-        req = Net::HTTP::Get.new "/", {}
-
-        @http.request(req) do |rep|
-          body = rep.body
-        end
-      end
-
-      assert_equal "https", body
-    end
-
-    def test_enabling_ssl_v3_support_requires_true
-      @server.stop(true)
-      @ctx.enable_SSLv3 = "truthy but not true"
-      @server = Puma::Server.new @app, @events
-      @server.add_ssl_listener @host, @port, @ctx
-      @server.run
-      @http.ssl_version='SSLv3'
-
-      assert_raises(OpenSSL::SSL::SSLError) do
-        @http.start do
-          Net::HTTP::Get.new '/'
-        end
-      end
-    end
-  end
-
 end