Docker: Comprehensive Removal of Deprecated Features and Code

- The Fluent logger option `fluentd-async-connect` has been deprecated in v20.10 and is now removed. [moby/moby#46114](https://github.com/moby/moby/pull/46114) - The `--time` option on `docker stop` and `docker restart` is deprecated and renamed to `--timeout`. [docker/cli#5485](https://github.com/docker/cli/pull/5485) - Go-SDK: `pkg/ioutils`: Remove `NewReaderErrWrapper` as it was never used. [moby/moby#49258](https://github.com/moby/moby/pull/49258) - Go-SDK: `pkg/ioutils`: Remove deprecated `BytesPipe`, `NewBytesPipe`, `ErrClosed`, `WriteCounter`, `NewWriteCounter`, `NewReaderErrWrapper`, `NopFlusher`. [moby/moby#49245](https://github.com/moby/moby/pull/49245) - Go-SDK: `pkg/ioutils`: Remove deprecated `NopWriter` and `NopWriteCloser`. [moby/moby#49256](https://github.com/moby/moby/pull/49256) - Go-SDK: `pkg/sysinfo`: Remove deprecated NumCPU. [moby/moby#49242](https://github.com/moby/moby/pull/49242) - Go-SDK: Remove `pkg/broadcaster`, as it was only used internally [moby/moby#49172](https://github.com/moby/moby/pull/49172) - Go-SDK: Remove deprecated `cli.Errors` type [docker/cli#5549](https://github.com/docker/cli/pull/5549) - Remove `pkg/ioutils.ReadCloserWrapper`, as it was only used in tests. [moby/moby#49237](https://github.com/moby/moby/pull/49237) - Remove deprecated `api-cors-header` config parameter and the `dockerd` `--api-cors-header` option [moby/moby#48209](https://github.com/moby/moby/pull/48209) - Remove deprecated `APIEndpoint.Version` field, `APIVersion` type, and `APIVersion1` and `APIVersion2` consts. [moby/moby#49004](https://github.com/moby/moby/pull/49004) - Remove deprecated `api-cors-header` config parameter and the Docker daemon's `--api-cors-header` option. [docker/cli#5437](https://github.com/docker/cli/pull/5437) - Remove deprecated `pkg/directory` package [moby/moby#48779](https://github.com/moby/moby/pull/48779) - Remove deprecated `pkg/dmsg.Dmesg()` [moby/moby#48109](https://github.com/moby/moby/pull/48109) - Remove deprecated image/spec package, which was moved to a separate module (`github.com/moby/docker-image-spec`) [moby/moby#48460](https://github.com/moby/moby/pull/48460) - Remove migration code and errors for the deprecated `logentries` logging driver. [moby/moby#48891](https://github.com/moby/moby/pull/48891) - Remove support for deprecated external graph-driver plugins. [moby/moby#48072](https://github.com/moby/moby/pull/48072) - `api/types`: Remove deprecated `container.ContainerNode` and `ContainerJSONBase.Node` field. [moby/moby#48107](https://github.com/moby/moby/pull/48107) - `api/types`: Remove deprecated aliases: `ImagesPruneReport`, `VolumesPruneReport`, `NetworkCreateRequest`, `NetworkCreate`, `NetworkListOptions`, `NetworkCreateResponse`, `NetworkInspectOptions`, `NetworkConnect`, `NetworkDisconnect`, `EndpointResource`, `NetworkResource`, `NetworksPruneReport`, `ExecConfig`, `ExecStartCheck`, `ContainerExecInspect`, `ContainersPruneReport`, `ContainerPathStat`, `CopyToContainerOptions`, `ContainerStats`, `ImageSearchOptions`, `ImageImportSource`, `ImageLoadResponse`, `ContainerNode`. [moby/moby#48107](https://github.com/moby/moby/pull/48107) - `libnetwork/iptables`: Remove deprecated `IPV`, `Iptables`, `IP6Tables` and `Passthrough()`. [moby/moby#49121](https://github.com/moby/moby/pull/49121) - `pkg/archive`: Remove deprecated `CanonicalTarNameForPath`, `NewTempArchive`, `TempArchive` [moby/moby#48708](https://github.com/moby/moby/pull/48708) - `pkg/fileutils`: Remove deprecated `GetTotalUsedFds` [moby/moby#49210](https://github.com/moby/moby/pull/49210) - `pkg/ioutils`: Remove `OnEOFReader`, which was only used internally [moby/moby#49170](https://github.com/moby/moby/pull/49170) - `pkg/longpath`: Remove deprecated `Prefix` constant. [moby/moby#48779](https://github.com/moby/moby/pull/48779) - `pkg/stringid`: Remove deprecated `IsShortID` and `ValidateID` functions [moby/moby#48705](https://github.com/moby/moby/pull/48705) - `runconfig/opts`: Remove deprecated `ConvertKVStringsToMap` [moby/moby#48102](https://github.com/moby/moby/pull/48102)

This section details the extensive removal of deprecated features, options, and code components from Docker. Key removals include the `fluentd-async-connect` logger option, renaming the `--time` option to `--timeout` on `docker stop` and `docker restart`, and the removal of numerous deprecated elements from the Go-SDK (including `pkg/ioutils`, `pkg/sysinfo`, `pkg/broadcaster`, and others). The deprecated `api-cors-header` config parameter and daemon option have been removed, along with deprecated packages like `pkg/directory` and `pkg/dmsg`. Support for external graph-driver plugins and the `logentries` logging driver is also removed. Various deprecated aliases and functions across `api/types`, `libnetwork/iptables`, `pkg/archive`, `pkg/fileutils`, `pkg/longpath`, `pkg/stringid`, and `runconfig/opts` are also eliminated, representing a significant cleanup of the codebase.