Remove references to the old Data class

Author: eregon

lib/truffle/socket/ifaddr.rb

@@ -28,7 +28,7 @@
 # EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 class Socket < BasicSocket
-  class Ifaddr < Data
+  class Ifaddr
     attr_reader :addr, :broadaddr, :dstaddr, :flags, :ifindex, :name, :netmask
 
     def initialize(addr: nil, broadaddr: nil, dstaddr: nil, flags: nil, ifindex: nil, name: nil, netmask: nil)

lib/truffle/truffle/cext.rb

@@ -107,6 +107,7 @@ module Truffle::CExt
   RUBY_FIXNUM_MAX = (1 << 62) - 1
 
   # This list of types is derived from MRI's error.c builtin_types array.
+  # It has the same indices as the ruby_value_type enum.
   BUILTIN_TYPES = [
     '',
     'Object',
@@ -342,8 +343,6 @@ def rb_tr_find_type(value)
       T_FIXNUM
     when Time
       T_DATA
-    when Data
-      T_DATA
     when BasicObject
       # See #rb_tr_cached_type, the final type must be calculated for each object.
       T_NONE

src/main/java/org/truffleruby/core/CoreLibrary.java

@@ -389,7 +389,6 @@ public CoreLibrary(RubyContext context, RubyLanguage language) {
         arrayClass = defineClass("Array");
         bindingClass = defineClass("Binding");
         defineClass("ConditionVariable");
-        defineClass("Data"); // Needed by Socket::Ifaddr and defined in core MRI
         dirClass = defineClass("Dir");
         encodingClass = defineClass("Encoding");
         enumeratorClass = defineClass("Enumerator");