[SRW-AQM] Updated spack-stack location for Hera Rocky8 and removed yafyaml.

[drnimbusrain]

DESCRIPTION OF CHANGES:

Updated spack-stack location for Hera Rocky8 and removed yafyaml.

Type of change

• [X ] Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

TESTS CONDUCTED:

Build aqm_dev successfully on Hera with Rocky8.

• [X ] hera.intel
• orion.intel
• hercules.intel
• cheyenne.intel
• cheyenne.gnu
• derecho.intel
• gaea.intel
• gaeac5.intel
• jet.intel
• wcoss2.intel
• NOAA Cloud (indicate which platform)
• Jenkins
• fundamental test suite
• comprehensive tests (specify which if a subset was used)

DEPENDENCIES:

DOCUMENTATION:

ISSUE:

#1057

LABELS (optional):

• Work In Progress
• [ X] bug
• enhancement
• documentation
• release
• high priority
• run_ci
• run_we2e_fundamental_tests
• run_we2e_comprehensive_tests
• Needs Cheyenne test
• Needs Jet test
• Needs Hera test
• Needs Orion test
• help wanted