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diff --git a/third_party/abseil_cpp/absl/base/internal/inline_variable.h b/third_party/abseil_cpp/absl/base/internal/inline_variable.h
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index 130d8c2476dd..000000000000
--- a/third_party/abseil_cpp/absl/base/internal/inline_variable.h
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@@ -1,107 +0,0 @@
-// Copyright 2017 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_BASE_INTERNAL_INLINE_VARIABLE_EMULATION_H_
-#define ABSL_BASE_INTERNAL_INLINE_VARIABLE_EMULATION_H_
-
-#include <type_traits>
-
-#include "absl/base/internal/identity.h"
-
-// File:
-//   This file define a macro that allows the creation of or emulation of C++17
-//   inline variables based on whether or not the feature is supported.
-
-////////////////////////////////////////////////////////////////////////////////
-// Macro: ABSL_INTERNAL_INLINE_CONSTEXPR(type, name, init)
-//
-// Description:
-//   Expands to the equivalent of an inline constexpr instance of the specified
-//   `type` and `name`, initialized to the value `init`. If the compiler being
-//   used is detected as supporting actual inline variables as a language
-//   feature, then the macro expands to an actual inline variable definition.
-//
-// Requires:
-//   `type` is a type that is usable in an extern variable declaration.
-//
-// Requires: `name` is a valid identifier
-//
-// Requires:
-//   `init` is an expression that can be used in the following definition:
-//     constexpr type name = init;
-//
-// Usage:
-//
-//   // Equivalent to: `inline constexpr size_t variant_npos = -1;`
-//   ABSL_INTERNAL_INLINE_CONSTEXPR(size_t, variant_npos, -1);
-//
-// Differences in implementation:
-//   For a direct, language-level inline variable, decltype(name) will be the
-//   type that was specified along with const qualification, whereas for
-//   emulated inline variables, decltype(name) may be different (in practice
-//   it will likely be a reference type).
-////////////////////////////////////////////////////////////////////////////////
-
-#ifdef __cpp_inline_variables
-
-// Clang's -Wmissing-variable-declarations option erroneously warned that
-// inline constexpr objects need to be pre-declared. This has now been fixed,
-// but we will need to support this workaround for people building with older
-// versions of clang.
-//
-// Bug: https://bugs.llvm.org/show_bug.cgi?id=35862
-//
-// Note:
-//   identity_t is used here so that the const and name are in the
-//   appropriate place for pointer types, reference types, function pointer
-//   types, etc..
-#if defined(__clang__)
-#define ABSL_INTERNAL_EXTERN_DECL(type, name) \
-  extern const ::absl::internal::identity_t<type> name;
-#else  // Otherwise, just define the macro to do nothing.
-#define ABSL_INTERNAL_EXTERN_DECL(type, name)
-#endif  // defined(__clang__)
-
-// See above comment at top of file for details.
-#define ABSL_INTERNAL_INLINE_CONSTEXPR(type, name, init) \
-  ABSL_INTERNAL_EXTERN_DECL(type, name)                  \
-  inline constexpr ::absl::internal::identity_t<type> name = init
-
-#else
-
-// See above comment at top of file for details.
-//
-// Note:
-//   identity_t is used here so that the const and name are in the
-//   appropriate place for pointer types, reference types, function pointer
-//   types, etc..
-#define ABSL_INTERNAL_INLINE_CONSTEXPR(var_type, name, init)                  \
-  template <class /*AbslInternalDummy*/ = void>                               \
-  struct AbslInternalInlineVariableHolder##name {                             \
-    static constexpr ::absl::internal::identity_t<var_type> kInstance = init; \
-  };                                                                          \
-                                                                              \
-  template <class AbslInternalDummy>                                          \
-  constexpr ::absl::internal::identity_t<var_type>                            \
-      AbslInternalInlineVariableHolder##name<AbslInternalDummy>::kInstance;   \
-                                                                              \
-  static constexpr const ::absl::internal::identity_t<var_type>&              \
-      name = /* NOLINT */                                                     \
-      AbslInternalInlineVariableHolder##name<>::kInstance;                    \
-  static_assert(sizeof(void (*)(decltype(name))) != 0,                        \
-                "Silence unused variable warnings.")
-
-#endif  // __cpp_inline_variables
-
-#endif  // ABSL_BASE_INTERNAL_INLINE_VARIABLE_EMULATION_H_