Revert "Extend dynamicRef keyword"v4.5.1

It needs performance optimization. See python-jsonschema/jsonschema#941.

This reverts commit 12c791ee81baf27e54d18baf95b975bd48387dc6.

1 files changed, 2 insertions, 10 deletions

diff --git a/jsonschema/_validators.py b/jsonschema/_validators.py
index 8caaa7e..9a07f5e 100644
--- a/jsonschema/_validators.py
+++ b/jsonschema/_validators.py
@@ -3,7 +3,6 @@ from urllib.parse import urldefrag, urljoin
 import re
 
 from jsonschema._utils import (
-    dynamic_anchor_extender,
     ensure_list,
     equal,
     extras_msg,
@@ -303,21 +302,14 @@ def ref(validator, ref, instance, schema):
 
 def dynamicRef(validator, dynamicRef, instance, schema):
     _, fragment = urldefrag(dynamicRef)
+
     for url in validator.resolver._scopes_stack:
         lookup_url = urljoin(url, dynamicRef)
         with validator.resolver.resolving(lookup_url) as subschema:
             if ("$dynamicAnchor" in subschema
                     and fragment == subschema["$dynamicAnchor"]):
-                scope_stack = list(validator.resolver._scopes_stack)
-                scope_stack.reverse()
-                extended_schema = dynamic_anchor_extender(
-                    validator, scope_stack, fragment, schema, subschema,
-                )
-                if extended_schema:
-                    yield from validator.descend(instance, extended_schema)
-                    break
-
                 yield from validator.descend(instance, subschema)
+                break
     else:
         with validator.resolver.resolving(dynamicRef) as subschema:
             yield from validator.descend(instance, subschema)