Revert "[Debuginfo][llvm-dwarfutil] llvm-dwarfutil dsymutil-like tool for ELF."

This reverts commit e2147c26bd1522ad67a98836fbe94933eab869bb.

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diff --git a/llvm/docs/CommandGuide/llvm-dwarfutil.rst b/llvm/docs/CommandGuide/llvm-dwarfutil.rst
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-llvm-dwarfutil - A tool to copy and manipulate debug info
-=========================================================
-
-.. program:: llvm-dwarfutil
-
-SYNOPSIS
---------
-
-:program:`llvm-dwarfutil` [*options*] *input* *output*
-
-DESCRIPTION
------------
-
-:program:`llvm-dwarfutil` is a tool to copy and manipulate debug info.
-
-In basic usage, it makes a semantic copy of the input to the output. If any
-options are specified, the output may be modified along the way, e.g.
-by removing unused debug info.
-
-If "-" is specified for the input file, the input is read from the program's
-standard input stream. If "-" is specified for the output file, the output
-is written to the standard output stream of the program.
-
-The tool is still in active development.
-
-COMMAND-LINE OPTIONS
---------------------
-
-.. option:: --garbage-collection
-
- Removes pieces of debug information related to discarded sections.
- When the linker does section garbage collection the abandoned debug info
- is left behind. Such abandoned debug info references address ranges using
- tombstone values. Thus, when this option is specified, the tool removes
- debug info which is marked with the tombstone value.
-
- That option is enabled by default.
-
-.. option:: --odr-deduplication
-
- Remove duplicated types (if "One Definition Rule" is supported by source
- language). Keeps first type definition and removes other definitions,
- potentially significantly reducing the size of output debug info.
-
- That option is enabled by default.
-
-.. option:: --help, -h
-
- Print a summary of command line options.
-
-.. option:: --no-garbage-collection
-
- Disable :option:`--garbage-collection`.
-
-.. option:: --no-odr-deduplication
-
- Disable :option:`--odr-deduplication`.
-
-.. option:: --no-separate-debug-file
-
- Disable :option:`--separate-debug-file`.
-
-.. option:: --num-threads=<n>, -j
-
- Specifies the maximum number (`n`) of simultaneous threads to use
- for processing.
-
-.. option:: --separate-debug-file
-
- Generate separate file containing output debug info. Using
- :program:`llvm-dwarfutil` with that option equals to the
- following set of commands:
-
-.. code-block:: console
-
- :program:`llvm-objcopy` --only-keep-debug in-file out-file.debug
- :program:`llvm-objcopy` --strip-debug in-file out-file
- :program:`llvm-objcopy` --add-gnu-debuglink=out-file.debug out-file
-
-.. option:: --tombstone=<value>
-
- <value> can be one of the following values:
-
-   - `bfd`: zero for all addresses and [1,1] for DWARF v4 (or less) address
-          ranges.
-
-   - `maxpc`: -1 for all addresses and -2 for DWARF v4 (or less) address ranges.
-
-   - `universal`: both `bfd` and `maxpc`.
-
-   - `exec`: match with address ranges of executable sections.
-
-   The value `universal` is used by default.
-
-.. option:: --verbose
-
- Enable verbose logging. This option disables multi-thread mode.
-
-.. option:: --verify
-
- Run the DWARF verifier on the output DWARF debug info.
-
-.. option:: --version
-
- Print the version of this program.
-
-SUPPORTED FORMATS
------------------
-
-The following formats are currently supported by :program:`llvm-dwarfutil`:
-
-ELF
-
-EXIT STATUS
------------
-
-:program:`llvm-dwarfutil` exits with a non-zero exit code if there is an error.
-Otherwise, it exits with code 0.
-
-BUGS
-----
-
-To report bugs, please visit <https://github.com/llvm/llvm-project/labels/tools:llvm-dwarfutil/>.