Close #19313: remove no longer needed Py_XINCREF

Eliminates a refleak introduced in commit b4a325275fb0
diff --git a/Python/compile.c b/Python/compile.c
index eeccd11..5b23e61 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -707,7 +707,6 @@
         goto _error;
     name = PyUnicode_Join(dot_str, seq);
     Py_DECREF(seq);
-    Py_XINCREF(name);
     return name;
 
 _error: