Revert "[exceptions] channels #7: get task handles"

This reverts commit 6cf55f313145d2d15d193a40e47878e27decae4c.

Reason for revert: Seems to be causing test timeouts (https://ci.chromium.org/p/fuchsia/builders/ci/zircon-x64-gcc-qemu_kvm/b8916456247609252784)

Original change's description:
> [exceptions] channels #7: get task handles
> 
> Adds zx_exception_get_thread() and zx_exception_get_process()
> syscalls to retrieve the thread and process handles from an exception.
> 
> Test: `k ut exception`, `runtests -t exception-test`,
>       `runtests -t policy-test`
> 
> Change-Id: I6be09a20d5b0857738d476717a1974d0f426a7aa

TBR=cpu@google.com,dje@google.com,scottmg@google.com,dpursell@google.com

Change-Id: If1f6e37e962f1452574d15aab01e70e7a4ae73f0
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
16 files changed
tree: 7a496f70797684b35575d52c84b51e84695877cb
  1. boards/
  2. build/
  3. buildtools/
  4. bundles/
  5. docs/
  6. examples/
  7. garnet/
  8. peridot/
  9. products/
  10. scripts/
  11. sdk/
  12. src/
  13. third_party/
  14. tools/
  15. zircon/
  16. .clang-format
  17. .dir-locals.el
  18. .gitattributes
  19. .gitignore
  20. .gn
  21. AUTHORS
  22. BUILD.gn
  23. CODE_OF_CONDUCT.md
  24. CONTRIBUTING.md
  25. LICENSE
  26. OWNERS
  27. PATENTS
  28. README.md
  29. rustfmt.toml
README.md

Fuchsia

Pink + Purple == Fuchsia (a new operating system)

What is Fuchsia?

Fuchsia is a modular, capability-based operating system. Fuchsia runs on modern 64-bit Intel and ARM processors.

Fuchsia is an open source project with a code of conduct that we expect everyone who interacts with the project to respect.

How can I build and run Fuchsia?

See Getting Started.

Where can I learn more about Fuchsia?

See the documentation.