[ruby/psych] remove vim settings

https://github.com/ruby/psych/commit/2f46abf4e1

ext/psych/psych.c

@@ -34,4 +34,3 @@ void Init_psych(void)
     Init_psych_to_ruby();
     Init_psych_yaml_tree();
 }
-/* vim: set noet sws=4 sw=4: */

ext/psych/psych_emitter.c

@@ -587,4 +587,3 @@ void Init_psych_emitter(void)
     id_indentation = rb_intern("indentation");
     id_canonical   = rb_intern("canonical");
 }
-/* vim: set noet sws=4 sw=4: */

ext/psych/psych_parser.c

@@ -562,4 +562,3 @@ void Init_psych_parser(void)
     id_end_mapping     = rb_intern("end_mapping");
     id_event_location  = rb_intern("event_location");
 }
-/* vim: set noet sws=4 sw=4: */

ext/psych/psych_to_ruby.c

@@ -36,4 +36,3 @@ void Init_psych_to_ruby(void)
     rb_define_private_method(cPsychVisitorsToRuby, "build_exception", build_exception, 2);
     rb_define_private_method(class_loader, "path2class", path2class, 1);
 }
-/* vim: set noet sws=4 sw=4: */

ext/psych/psych_yaml_tree.c

@@ -9,4 +9,3 @@ void Init_psych_yaml_tree(void)
     VALUE visitor   = rb_define_class_under(visitors, "Visitor", rb_cObject);
     cPsychVisitorsYamlTree = rb_define_class_under(visitors, "YAMLTree", visitor);
 }
-/* vim: set noet sws=4 sw=4: */