Uncomment Py_DEPRECATED for Py_UNICODE APIs (GH-21318)

PyUnicode_EncodeDecimal and PyUnicode_TransformDecimalToASCII
are deprecated since Python 3.3.
But Py_DEPRECATED(3.3) was commented out.
diff --git a/Include/cpython/unicodeobject.h b/Include/cpython/unicodeobject.h
index 0f19b2a..a82eee4 100644
--- a/Include/cpython/unicodeobject.h
+++ b/Include/cpython/unicodeobject.h
@@ -974,7 +974,7 @@
 
 */
 
-/* Py_DEPRECATED(3.3) */ PyAPI_FUNC(int) PyUnicode_EncodeDecimal(
+Py_DEPRECATED(3.3) PyAPI_FUNC(int) PyUnicode_EncodeDecimal(
     Py_UNICODE *s,              /* Unicode buffer */
     Py_ssize_t length,          /* Number of Py_UNICODE chars to encode */
     char *output,               /* Output buffer; must have size >= length */
@@ -987,7 +987,7 @@
    Returns a new Unicode string on success, NULL on failure.
 */
 
-/* Py_DEPRECATED(3.3) */
+Py_DEPRECATED(3.3)
 PyAPI_FUNC(PyObject*) PyUnicode_TransformDecimalToASCII(
     Py_UNICODE *s,              /* Unicode buffer */
     Py_ssize_t length           /* Number of Py_UNICODE chars to transform */
diff --git a/Modules/_testcapimodule.c b/Modules/_testcapimodule.c
index 629102b..1e4c31f 100644
--- a/Modules/_testcapimodule.c
+++ b/Modules/_testcapimodule.c
@@ -2024,6 +2024,10 @@
     return Py_BuildValue("(Nn)", to_copy, copied);
 }
 
+/* Ignore use of deprecated APIs */
+_Py_COMP_DIAG_PUSH
+_Py_COMP_DIAG_IGNORE_DEPR_DECLS
+
 static PyObject *
 unicode_encodedecimal(PyObject *self, PyObject *args)
 {
@@ -2069,10 +2073,6 @@
     return PyUnicode_TransformDecimalToASCII(unicode, length);
 }
 
-/* Ignore use of deprecated APIs */
-_Py_COMP_DIAG_PUSH
-_Py_COMP_DIAG_IGNORE_DEPR_DECLS
-
 static PyObject *
 unicode_legacy_string(PyObject *self, PyObject *args)
 {