Remove 0004-undeprecate-nullability-types.patch

It prevents the next roll of Abseil in Chromium.

Bug: chromium:412943761
Change-Id: Ic7a363ba02e44740c41d8569d5cd2c322ca18a23
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6591443
Auto-Submit: Mirko Bonadei <mbonadei@chromium.org>
Reviewed-by: Danil Chapovalov <danilchap@chromium.org>
Commit-Queue: Mirko Bonadei <mbonadei@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1465888}
NOKEYCHECK=True
GitOrigin-RevId: 0e75507ead665d7dad0551125f1fb5e0559a1d02
diff --git a/patches/0004-undeprecate-nullability-types.patch b/patches/0004-undeprecate-nullability-types.patch
deleted file mode 100644
index 29da7d4..0000000
--- a/patches/0004-undeprecate-nullability-types.patch
+++ /dev/null
@@ -1,33 +0,0 @@
-TODO: crbug.com/412943761 - Remove when all libraries migrate to attribute-like nullability annotations.
----
-diff --git a/third_party/abseil-cpp/absl/base/internal/nullability_deprecated.h b/third_party/abseil-cpp/absl/base/internal/nullability_deprecated.h
-index 1174a96eaa3e0..b6405f1d9b269 100644
---- a/third_party/abseil-cpp/absl/base/internal/nullability_deprecated.h
-+++ b/third_party/abseil-cpp/absl/base/internal/nullability_deprecated.h
-@@ -77,7 +77,7 @@ using NullabilityUnknownImpl
- // Is equivalent to:
- // int* absl_nonnull foo;
- template <typename T>
--using Nonnull [[deprecated("Use `absl_nonnull`.")]] =
-+using Nonnull =
-     nullability_internal::NonnullImpl<T>;
- 
- // absl::Nullable, analogous to absl_nullable
-@@ -87,7 +87,7 @@ using Nonnull [[deprecated("Use `absl_nonnull`.")]] =
- // Is equivalent to:
- // int* absl_nullable foo;
- template <typename T>
--using Nullable [[deprecated("Use `absl_nullable`.")]] =
-+using Nullable =
-     nullability_internal::NullableImpl<T>;
- 
- // absl::NullabilityUnknown, analogous to absl_nullability_unknown
-@@ -97,7 +97,7 @@ using Nullable [[deprecated("Use `absl_nullable`.")]] =
- // Is equivalent to:
- // int* absl_nullability_unknown foo;
- template <typename T>
--using NullabilityUnknown [[deprecated("Use `absl_nullability_unknown`.")]] =
-+using NullabilityUnknown =
-     nullability_internal::NullabilityUnknownImpl<T>;
- 
- ABSL_NAMESPACE_END