[Core] Remove delete_creating_tasks (#12962)

python/ray/_raylet.pyx

@@ -1031,14 +1031,13 @@ cdef class CoreWorker:
 
         return ready, not_ready
 
-    def free_objects(self, object_refs, c_bool local_only,
-                     c_bool delete_creating_tasks):
+    def free_objects(self, object_refs, c_bool local_only):
         cdef:
             c_vector[CObjectID] free_ids = ObjectRefsToVector(object_refs)
 
         with nogil:
             check_status(CCoreWorkerProcess.GetCoreWorker().Delete(
-                free_ids, local_only, delete_creating_tasks))
+                free_ids, local_only))
 
     def global_gc(self):
         with nogil:

python/ray/includes/libcoreworker.pxd

@@ -182,7 +182,7 @@ cdef extern from "ray/core_worker/core_worker.h" nogil:
                         int64_t timeout_ms, c_vector[c_bool] *results,
                         c_bool fetch_local)
         CRayStatus Delete(const c_vector[CObjectID] &object_ids,
-                          c_bool local_only, c_bool delete_creating_tasks)
+                          c_bool local_only)
         CRayStatus TriggerGlobalGC()
         c_string MemoryUsageString()
 

python/ray/internal/internal_api.py

@@ -37,7 +37,7 @@ def memory_summary():
     return reply.memory_summary
 
 
-def free(object_refs, local_only=False, delete_creating_tasks=False):
+def free(object_refs, local_only=False):
     """Free a list of IDs from the in-process and plasma object stores.
 
     This function is a low-level API which should be used in restricted
@@ -59,8 +59,6 @@ def free(object_refs, local_only=False, delete_creating_tasks=False):
         object_refs (List[ObjectRef]): List of object refs to delete.
         local_only (bool): Whether only deleting the list of objects in local
             object store or all object stores.
-        delete_creating_tasks (bool): Whether also delete the object creating
-            tasks.
     """
     worker = ray.worker.global_worker
 
@@ -83,5 +81,4 @@ def free(object_refs, local_only=False, delete_creating_tasks=False):
         if len(object_refs) == 0:
             return
 
-        worker.core_worker.free_objects(object_refs, local_only,
-                                        delete_creating_tasks)
+        worker.core_worker.free_objects(object_refs, local_only)