diff --git a/sdk/lib/_internal/fix_data.yaml b/sdk/lib/_internal/fix_data.yaml
index 7f87843c7b5..98ccd5508bd 100644
--- a/sdk/lib/_internal/fix_data.yaml
+++ b/sdk/lib/_internal/fix_data.yaml
@@ -1307,56 +1307,6 @@ transforms:
       - kind: 'rename'
         newName: 'gzip'
 
-  - title: "Rename to 'read'"
-    date: 2021-09-20
-    element:
-      uris: [ 'dart:io' ]
-      field: 'READ'
-      inClass: 'FileMode'
-    changes:
-      - kind: 'rename'
-        newName: 'read'
-
-  - title: "Rename to 'write'"
-    date: 2021-09-20
-    element:
-      uris: [ 'dart:io' ]
-      field: 'WRITE'
-      inClass: 'FileMode'
-    changes:
-      - kind: 'rename'
-        newName: 'write'
-
-  - title: "Rename to 'append'"
-    date: 2021-09-20
-    element:
-      uris: [ 'dart:io' ]
-      field: 'APPEND'
-      inClass: 'FileMode'
-    changes:
-      - kind: 'rename'
-        newName: 'append'
-
-  - title: "Rename to 'writeOnly'"
-    date: 2021-09-20
-    element:
-      uris: [ 'dart:io' ]
-      field: 'WRITE_ONLY'
-      inClass: 'FileMode'
-    changes:
-      - kind: 'rename'
-        newName: 'writeOnly'
-
-  - title: "Rename to 'writeOnlyAppend'"
-    date: 2021-09-20
-    element:
-      uris: [ 'dart:io' ]
-      field: 'WRITE_ONLY_APPEND'
-      inClass: 'FileMode'
-    changes:
-      - kind: 'rename'
-        newName: 'writeOnlyAppend'
-
   - title: "Rename to 'shared'"
     date: 2021-09-20
     element:
diff --git a/tests/lib/fix_data_tests/io.dart b/tests/lib/fix_data_tests/io.dart
index 7a2970481c4..1f582d922ae 100644
--- a/tests/lib/fix_data_tests/io.dart
+++ b/tests/lib/fix_data_tests/io.dart
@@ -131,11 +131,6 @@ void main() {
   print(ZLibOption.STRATEGY_DEFAULT);
   print(ZLIB);
   print(GZIP);
-  print(FileMode.READ);
-  print(FileMode.WRITE);
-  print(FileMode.APPEND);
-  print(FileMode.WRITE_ONLY);
-  print(FileMode.WRITE_ONLY_APPEND);
   print(FileLock.SHARED);
   print(FileLock.EXCLUSIVE);
   print(FileLock.BLOCKING_SHARED);
diff --git a/tests/lib/fix_data_tests/io.dart.expect b/tests/lib/fix_data_tests/io.dart.expect
index f26799ad324..590adfc8b28 100644
--- a/tests/lib/fix_data_tests/io.dart.expect
+++ b/tests/lib/fix_data_tests/io.dart.expect
@@ -131,11 +131,6 @@ void main() {
   print(ZLibOption.strategyDefault);
   print(zlib);
   print(gzip);
-  print(FileMode.read);
-  print(FileMode.write);
-  print(FileMode.append);
-  print(FileMode.writeOnly);
-  print(FileMode.writeOnlyAppend);
   print(FileLock.shared);
   print(FileLock.exclusive);
   print(FileLock.blockingShared);