Migrate to Data#should_generate_struct?

Author: sue445

_tools/ruby_h_to_go/lib/ruby_header_parser/parser.rb

@@ -62,7 +62,7 @@ def extract_struct_definitions
 
         struct_name = parts[0]
 
-        next unless should_generate_struct?(struct_name)
+        next unless data.should_generate_struct?(struct_name)
 
         definitions << StructDefinition.new(
           name:     struct_name,
@@ -107,15 +107,6 @@ def read_definition_from_header_file(file, line_num)
       ""
     end
 
-    # Whether generate C struct to go
-    # @param struct_name [String]
-    # @return [Boolean]
-    def should_generate_struct?(struct_name)
-      struct_name = struct_name.downcase
-
-      struct_name.start_with?("rb_")
-    end
-
     ALLOW_TYPE_NAME_PREFIXES = %w[rb_ st_].freeze
     ALLOW_TYPE_NAMES = %w[id value].freeze