remove "deprecated" for rb_frame_method_id_and_class [Bug #15300]

* include/ruby/backward.h (rb_frame_method_id_and_class): we had labeled
  `rb_frame_method_id_and_class()` as deprecated because MRI internal
  doesn't use it, but we found there are user of this API in external
  C-extensions. Now we don't have proper alternative API and no time
  to make alternative API, so I remove "deprecated" label.
  [Bug #15300]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66522 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

include/ruby/backward.h

@@ -49,9 +49,6 @@ DECLARE_DEPRECATED_INTERNAL_FEATURE(rb_struct_ptr);
 DECLARE_DEPRECATED_INTERNAL_FEATURE(rb_generic_ivar_table);
 NORETURN(ERRORFUNC(("internal function"), VALUE rb_mod_const_missing(VALUE, VALUE)));
 
-/* vm.c */
-DEPRECATED(int rb_frame_method_id_and_class(ID *idp, VALUE *klassp));
-
 /* from version.c */
 #ifndef RUBY_SHOW_COPYRIGHT_TO_DIE
 # define RUBY_SHOW_COPYRIGHT_TO_DIE 1

include/ruby/intern.h

@@ -986,6 +986,7 @@ VALUE rb_mod_class_variables(int, const VALUE*, VALUE);
 VALUE rb_mod_remove_cvar(VALUE, VALUE);
 
 ID rb_frame_callee(void);
+int rb_frame_method_id_and_class(ID *idp, VALUE *klassp);
 VALUE rb_str_succ(VALUE);
 VALUE rb_time_succ(VALUE);
 VALUE rb_make_backtrace(void);

vm.c

@@ -2167,7 +2167,7 @@ rb_ec_frame_method_id_and_class(const rb_execution_context_t *ec, ID *idp, ID *c
     return rb_vm_control_frame_id_and_class(ec->cfp, idp, called_idp, klassp);
 }
 
-RUBY_FUNC_EXPORTED int
+int
 rb_frame_method_id_and_class(ID *idp, VALUE *klassp)
 {
     return rb_ec_frame_method_id_and_class(GET_EC(), idp, 0, klassp);