Remove lazy dict tracking from no-gil build

Author: markshannon

Include/internal/pycore_dict.h

@@ -43,8 +43,6 @@ extern int _PyDict_Next(
 
 extern int _PyDict_HasOnlyStringKeys(PyObject *mp);
 
-extern void _PyDict_MaybeUntrack(PyObject *mp);
-
 // Export for '_ctypes' shared extension
 PyAPI_FUNC(Py_ssize_t) _PyDict_SizeOf(PyDictObject *);
 

Python/gc.c

@@ -5,7 +5,7 @@
 #include "Python.h"
 #include "pycore_ceval.h"         // _Py_set_eval_breaker_bit()
 #include "pycore_context.h"
-#include "pycore_dict.h"          // _PyDict_MaybeUntrack()
+#include "pycore_dict.h"          // _PyInlineValuesSize()
 #include "pycore_initconfig.h"
 #include "pycore_interp.h"        // PyInterpreterState.gc
 #include "pycore_object.h"

Python/gc_free_threading.c

@@ -3,7 +3,7 @@
 #include "pycore_brc.h"           // struct _brc_thread_state
 #include "pycore_ceval.h"         // _Py_set_eval_breaker_bit()
 #include "pycore_context.h"
-#include "pycore_dict.h"          // _PyDict_MaybeUntrack()
+#include "pycore_dict.h"          // _PyInlineValuesSize()
 #include "pycore_freelist.h"      // _PyObject_ClearFreeLists()
 #include "pycore_initconfig.h"
 #include "pycore_interp.h"        // PyInterpreterState.gc
@@ -484,13 +484,6 @@ update_refs(const mi_heap_t *heap, const mi_heap_area_t *area,
                 return true;
             }
         }
-        else if (PyDict_CheckExact(op)) {
-            _PyDict_MaybeUntrack(op);
-            if (!_PyObject_GC_IS_TRACKED(op)) {
-                gc_restore_refs(op);
-                return true;
-            }
-        }
     }
 
     // We repurpose ob_tid to compute "gc_refs", the number of external