diff --git a/spacy/attrs.pyx b/spacy/attrs.pyx
index b15db7599..9122de17b 100644
--- a/spacy/attrs.pyx
+++ b/spacy/attrs.pyx
@@ -74,7 +74,6 @@ IDS = {
     "SUFFIX": SUFFIX,
 
     "LENGTH": LENGTH,
-    "CLUSTER": CLUSTER,
     "LEMMA": LEMMA,
     "POS": POS,
     "TAG": TAG,
@@ -85,9 +84,7 @@ IDS = {
     "ENT_KB_ID": ENT_KB_ID,
     "HEAD": HEAD,
     "SENT_START": SENT_START,
-    "SENT_END": SENT_END,
     "SPACY": SPACY,
-    "PROB": PROB,
     "LANG": LANG,
     "MORPH": MORPH,
     "IDX": IDX
diff --git a/spacy/tests/vocab_vectors/test_vocab_api.py b/spacy/tests/vocab_vectors/test_vocab_api.py
index a687059be..56ef1d108 100644
--- a/spacy/tests/vocab_vectors/test_vocab_api.py
+++ b/spacy/tests/vocab_vectors/test_vocab_api.py
@@ -1,5 +1,5 @@
 import pytest
-from spacy.attrs import LEMMA, ORTH, PROB, IS_ALPHA
+from spacy.attrs import LEMMA, ORTH, IS_ALPHA
 from spacy.parts_of_speech import NOUN, VERB
 
 
@@ -30,7 +30,6 @@ def test_vocab_api_shape_attr(en_vocab, text):
         ("VERB", VERB),
         ("LEMMA", LEMMA),
         ("ORTH", ORTH),
-        ("PROB", PROB),
     ],
 )
 def test_vocab_api_symbols(en_vocab, string, symbol):