[pelesh]

Description

Remove printing of AMD header and suppress printing error messages in HyKKT solver test.

Every time ordering is called the AMD preamble is printed to standard output whether user wants it or not. This PR turns off the AMD info printing.

Fixes #474.

Proposed changes

• Mute logger when testing HyKKT's response to erroneous input.
• Remove printing AMD library header altogether.

Checklist

• All tests pass (make test and make test_install per testing instructions). Code tested on
  • CPU backend
  • CUDA backend
  • HIP backend
• I have manually run the non-experimental examples and verified that residuals are close to machine precision. (In your build directory run: ./examples/<your_example>.exe -h to get instructions how to run examples). Code tested on:
  • CPU backend
  • CUDA backend
  • HIP backend
• Code compiles cleanly with flags -Wall -Wpedantic -Wconversion -Wextra.
• The new code follows Re::Solve style guidelines.
• There are unit tests for the new code.
• The new code is documented.
• The feature branch is rebased with respect to the target branch.
• N/A I have updated CHANGELOG.md to reflect the changes in this PR. If this is a minor PR that is part of a larger fix already included in the file, state so.

Further comments

[shakedregev]

Looks good, I would just move the comment so that it's more clear what it refers to.