diff --git a/tools/winscope/src/decode.js b/tools/winscope/src/decode.js
index 4d9b511b7..fc652cde4 100644
--- a/tools/winscope/src/decode.js
+++ b/tools/winscope/src/decode.js
@@ -22,7 +22,6 @@ import jsonProtoDefsWm from 'frameworks/base/core/proto/android/server/windowman
 import jsonProtoDefsProtoLog from 'frameworks/base/core/proto/android/internal/protolog.proto';
 import jsonProtoDefsSf from 'frameworks/native/services/surfaceflinger/layerproto/layerstrace.proto';
 import jsonProtoDefsTransaction from 'frameworks/native/services/surfaceflinger/layerproto/transactions.proto';
-import jsonProtoDefsTransactionLegacy from 'frameworks/native/cmds/surfacereplayer/proto/src/trace.proto';
 import jsonProtoDefsWl from 'WaylandSafePath/waylandtrace.proto';
 import jsonProtoDefsSysUi from 'frameworks/base/packages/SystemUI/src/com/android/systemui/tracing/sysui_trace.proto';
 import jsonProtoDefsLauncher from 'packages/apps/Launcher3/protos/launcher_trace_file.proto';
@@ -32,7 +31,6 @@ import jsonProtoDefsErrors from 'platform_testing/libraries/flicker/src/com/andr
 import protobuf from 'protobufjs';
 import {transform_accessibility_trace} from './transform_accessibility.js';
 import {transform_transaction_trace} from './transform_transaction.js';
-import {transform_transaction_trace_legacy} from './transform_transaction_legacy.js';
 import {transform_wl_outputstate, transform_wayland_trace} from './transform_wl.js';
 import {transformProtolog} from './transform_protolog.js';
 import {transform_sysui_trace} from './transform_sys_ui.js';
@@ -67,7 +65,6 @@ const WmDumpMessage = lookup_type(jsonProtoDefsWm, 'com.android.server.wm.Window
 const SfTraceMessage = lookup_type(jsonProtoDefsSf, 'android.surfaceflinger.LayersTraceFileProto');
 const SfDumpMessage = lookup_type(jsonProtoDefsSf, 'android.surfaceflinger.LayersProto');
 const SfTransactionTraceMessage = lookup_type(jsonProtoDefsTransaction, 'TransactionTraceFile');
-const SfTransactionTraceMessageLegacy = lookup_type(jsonProtoDefsTransactionLegacy, 'Trace');
 const WaylandTraceMessage = lookup_type(jsonProtoDefsWl, 'org.chromium.arc.wayland_composer.TraceFileProto');
 const WaylandDumpMessage = lookup_type(jsonProtoDefsWl, 'org.chromium.arc.wayland_composer.OutputStateProto');
 const ProtoLogMessage = lookup_type(jsonProtoDefsProtoLog, 'com.android.internal.protolog.ProtoLogFileProto');
@@ -413,17 +410,6 @@ const FILE_DECODERS = {
       timeline: true,
     },
   },
-  [FILE_TYPES.TRANSACTIONS_TRACE_LEGACY]: {
-    name: 'Transactions (Legacy)',
-    decoder: protoDecoder,
-    decoderParams: {
-      type: FILE_TYPES.TRANSACTIONS_TRACE_LEGACY,
-      mime: 'application/octet-stream',
-      objTypeProto: SfTransactionTraceMessageLegacy,
-      transform: transform_transaction_trace_legacy,
-      timeline: true,
-    },
-  },
   [FILE_TYPES.PROTO_LOG]: {
     name: 'ProtoLog',
     decoder: protoDecoder,
diff --git a/tools/winscope/src/transform_transaction_legacy.js b/tools/winscope/src/transform_transaction_legacy.js
deleted file mode 100644
index bfd279526..000000000
--- a/tools/winscope/src/transform_transaction_legacy.js
+++ /dev/null
@@ -1,86 +0,0 @@
-/*
- * Copyright 2019, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-import {nanos_to_string} from './transform.js';
-
-function transform_transaction(transaction, layerIdToName) {
-  const transactions = [];
-
-  for (const surfaceChange of transaction.surfaceChange) {
-    transactions.push(Object.freeze({
-      type: 'surfaceChange',
-      obj: surfaceChange,
-      layerName: layerIdToName[surfaceChange.id],
-    }));
-  }
-
-  for (const displayChange of transaction.displayChange) {
-    transactions.push(Object.freeze({
-      type: 'displayChange',
-      obj: displayChange,
-      layerName: layerIdToName[displayChange.id],
-    }));
-  }
-
-  return transactions;
-}
-
-function transform_entry(entry, layerIdToName) {
-  const type = entry.increment;
-  const timestamp = entry.timeStamp;
-  const time = nanos_to_string(timestamp);
-
-  switch (type) {
-    case 'transaction':
-
-      return Object.freeze({
-        type,
-        // TODO: Rename to changes
-        transactions: transform_transaction(entry.transaction, layerIdToName),
-        synchronous: entry.transaction.synchronous,
-        animation: entry.transaction.animation,
-        identifier: entry.transaction.id,
-        time,
-        origin: entry.transaction.origin,
-        timestamp,
-      });
-
-    case 'surfaceCreation':
-      // NOTE: There is no break on purpose — we want to fall through to default
-      layerIdToName[entry[type].id] = entry[type].name;
-
-    default:
-      return Object.freeze({
-        type,
-        obj: entry[type],
-        layerName: entry[type].name ?? layerIdToName[entry[type].id],
-        time,
-        timestamp,
-      });
-  }
-}
-
-/**
- * @deprecated This trace has been replaced by the new transactions trace
- */
-function transform_transaction_trace_legacy(entries) {
-  const layerIdToName = {};
-  const data = entries.increment.map((entry) => transform_entry(entry, layerIdToName));
-
-  return {children: data};
-}
-
-export {transform_transaction_trace_legacy};