gh-145855: Remove the DELETE_ATTR bytecode (GH-146216)

Author: aisk

Doc/library/dis.rst

@@ -1095,17 +1095,6 @@ iterations of the loop.
    where *namei* is the index of name in :attr:`~codeobject.co_names` of the
    :ref:`code object <code-objects>`.
 
-.. opcode:: DELETE_ATTR (namei)
-
-   Implements::
-
-      obj = STACK.pop()
-      del obj.name
-
-   where *namei* is the index of name into :attr:`~codeobject.co_names` of the
-   :ref:`code object <code-objects>`.
-
-
 .. opcode:: STORE_GLOBAL (namei)
 
    Works as :opcode:`STORE_NAME`, but stores the name as a global.

Doc/tools/removed-ids.txt

@@ -6,6 +6,7 @@ c-api/file.html: deprecated-api
 
 # Removed sections
 library/asyncio-task.html: terminating-a-task-group
+library/dis.html: opcode-DELETE_ATTR
 library/dis.html: opcode-DELETE_GLOBAL
 library/dis.html: opcode-DELETE_NAME
 library/asyncio-llapi-index.html: event-loop-policies

Include/internal/pycore_magic_number.h

@@ -301,6 +301,7 @@ Known values:
     Python 3.16a0 3701 (Add CONSTANT_EMPTY_TUPLE to LOAD_COMMON_CONSTANT)
     Python 3.16a1 3702 (Replace DELETE_NAME with PUSH_NULL; STORE_NAME)
     Python 3.16a1 3703 (Replace DELETE_GLOBAL with PUSH_NULL; STORE_GLOBAL)
+    Python 3.16a1 3704 (Replace DELETE_ATTR with PUSH_NULL; STORE_ATTR)
 
 
     Python 3.17 will start with 3750
@@ -314,7 +315,7 @@ PC/launcher.c must also be updated.
 
 */
 
-#define PYC_MAGIC_NUMBER 3703
+#define PYC_MAGIC_NUMBER 3704
 /* This is equivalent to converting PYC_MAGIC_NUMBER to 2 bytes
    (little-endian) and then appending b'\r\n'. */
 #define PYC_MAGIC_NUMBER_TOKEN \