#7126: remove skip for test_sd_matmul test (#16729)

### Ticket
Link to Github Issue #7126

### Problem description
A test was failing and was skipped

### What's changed
After various issues were fixed over time the test now passes. Therefore
enable it again.

### Checklist
- [x] Post commit CI passes
https://github.com/tenstorrent/tt-metal/actions/runs/12776412082
- [ ] Blackhole Post commit (if applicable) Too many issues, but test
passed locally.
- [ ] Model regression CI testing passes (if applicable) N/A
- [ ] Device performance regression CI testing passes (if applicable)
N/A
- [ ] **(For models and ops writers)** Full [new
models](https://github.com/tenstorrent/tt-metal/actions/workflows/full-new-models-suite.yaml)
tests passes
- [ ] New/Existing tests provide coverage for changes

tests/ttnn/unit_tests/operations/test_matmul.py

@@ -1719,7 +1719,6 @@ def test_falcon_query_key_value_matmul(device, batch_size, m_size, k_size, n_siz
 
 
 # @skip_for_grayskull()
-@pytest.mark.skipif(is_wormhole_b0() or is_blackhole(), reason="Unsupported on WH and BH")
 @pytest.mark.parametrize(
     "batch_size, channel_a, channel_b, m_size, k_size, n_size, has_bias",
     [