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diff --git a/third_party/abseil-cpp/absl/strings/internal/cordz_update_tracker.h b/third_party/abseil-cpp/absl/strings/internal/cordz_update_tracker.h
deleted file mode 100644
index 1f764486eb..0000000000
--- a/third_party/abseil-cpp/absl/strings/internal/cordz_update_tracker.h
+++ /dev/null
@@ -1,121 +0,0 @@
-// Copyright 2021 The Abseil Authors
-//
-// 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
-//
-//     https://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.
-
-#ifndef ABSL_STRINGS_INTERNAL_CORDZ_UPDATE_TRACKER_H_
-#define ABSL_STRINGS_INTERNAL_CORDZ_UPDATE_TRACKER_H_
-
-#include <atomic>
-#include <cstdint>
-
-#include "absl/base/config.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace cord_internal {
-
-// CordzUpdateTracker tracks counters for Cord update methods.
-//
-// The purpose of CordzUpdateTracker is to track the number of calls to methods
-// updating Cord data for sampled cords. The class internally uses 'lossy'
-// atomic operations: Cord is thread-compatible, so there is no need to
-// synchronize updates. However, Cordz collection threads may call 'Value()' at
-// any point, so the class needs to provide thread safe access.
-//
-// This class is thread-safe. But as per above comments, all non-const methods
-// should be used single-threaded only: updates are thread-safe but lossy.
-class CordzUpdateTracker {
- public:
-  // Tracked update methods.
-  enum MethodIdentifier {
-    kUnknown,
-    kAppendBuffer,
-    kAppendCord,
-    kAppendExternalMemory,
-    kAppendString,
-    kAssignCord,
-    kAssignString,
-    kClear,
-    kConstructorCord,
-    kConstructorString,
-    kCordReader,
-    kFlatten,
-    kGetAppendRegion,
-    kMakeCordFromExternal,
-    kMoveAppendCord,
-    kMoveAssignCord,
-    kMovePrependCord,
-    kPrependBuffer,
-    kPrependCord,
-    kPrependString,
-    kRemovePrefix,
-    kRemoveSuffix,
-    kSubCord,
-
-    // kNumMethods defines the number of entries: must be the last entry.
-    kNumMethods,
-  };
-
-  // Constructs a new instance. All counters are zero-initialized.
-  constexpr CordzUpdateTracker() noexcept : values_{} {}
-
-  // Copy constructs a new instance.
-  CordzUpdateTracker(const CordzUpdateTracker& rhs) noexcept { *this = rhs; }
-
-  // Assigns the provided value to this instance.
-  CordzUpdateTracker& operator=(const CordzUpdateTracker& rhs) noexcept {
-    for (int i = 0; i < kNumMethods; ++i) {
-      values_[i].store(rhs.values_[i].load(std::memory_order_relaxed),
-                       std::memory_order_relaxed);
-    }
-    return *this;
-  }
-
-  // Returns the value for the specified method.
-  int64_t Value(MethodIdentifier method) const {
-    return values_[method].load(std::memory_order_relaxed);
-  }
-
-  // Increases the value for the specified method by `n`
-  void LossyAdd(MethodIdentifier method, int64_t n = 1) {
-    auto& value = values_[method];
-    value.store(value.load(std::memory_order_relaxed) + n,
-                std::memory_order_relaxed);
-  }
-
-  // Adds all the values from `src` to this instance
-  void LossyAdd(const CordzUpdateTracker& src) {
-    for (int i = 0; i < kNumMethods; ++i) {
-      MethodIdentifier method = static_cast<MethodIdentifier>(i);
-      if (int64_t value = src.Value(method)) {
-        LossyAdd(method, value);
-      }
-    }
-  }
-
- private:
-  // Until C++20 std::atomic is not constexpr default-constructible, so we need
-  // a wrapper for this class to be constexpr constructible.
-  class Counter : public std::atomic<int64_t> {
-   public:
-    constexpr Counter() noexcept : std::atomic<int64_t>(0) {}
-  };
-
-  Counter values_[kNumMethods];
-};
-
-}  // namespace cord_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-#endif  // ABSL_STRINGS_INTERNAL_CORDZ_UPDATE_TRACKER_H_