#7168: enable and move some matmul tests to nightly (#18680)

### Ticket
Link to Github Issue #7168

### Problem description
- tests that had ND behaviour before now work and need to be enabled

### What's changed
- enable the WH tests
- move them to nightly since they take a fair amount of time
- remove GS tests since that's end of life

### Checklist
- [x] [All post
commit](https://github.com/tenstorrent/tt-metal/actions/workflows/all-post-commit-workflows.yaml)
CI passes
https://github.com/tenstorrent/tt-metal/actions/runs/13690067981
- [ ] [Blackhole Post
commit](https://github.com/tenstorrent/tt-metal/actions/workflows/blackhole-post-commit.yaml)
CI passes (if applicable) N/A
- [ ] [Model
regression](https://github.com/tenstorrent/tt-metal/actions/workflows/perf-models.yaml)
CI passes (if applicable) N/A
- [ ] [Device performance
regression](https://github.com/tenstorrent/tt-metal/actions/workflows/perf-device-models.yaml)
CI passes (if applicable) N/A
- [ ] **(For models and ops writers)** Full [new models
tests](https://github.com/tenstorrent/tt-metal/actions/workflows/full-new-models-suite.yaml)
CI passes (if applicable) N/A
- [x] New/Existing tests provide coverage for changes

Nighly L2 passes
https://github.com/tenstorrent/tt-metal/actions/runs/13690073899