Remove faulty matmul type promotion test

Author: honno

array_api_tests/test_type_promotion.py

@@ -224,15 +224,6 @@ def test_where(in_dtypes, out_dtype, shapes, data):
 numeric_promotion_params = promotion_params[1:]
 
 
-@pytest.mark.parametrize('in_dtypes, out_dtype', numeric_promotion_params)
-@given(shapes=hh.mutually_broadcastable_shapes(2, min_dims=1), data=st.data())
-def test_matmul(in_dtypes, out_dtype, shapes, data):
-    x1 = data.draw(xps.arrays(dtype=in_dtypes[0], shape=shapes[0]), label='x1')
-    x2 = data.draw(xps.arrays(dtype=in_dtypes[1], shape=shapes[1]), label='x2')
-    out = xp.matmul(x1, x2)
-    assert_dtype(f'matmul({fmt_types(in_dtypes)})', 'out.dtype', out.dtype, out_dtype)
-
-
 @pytest.mark.parametrize('in_dtypes, out_dtype', numeric_promotion_params)
 @given(shapes=hh.mutually_broadcastable_shapes(2, min_dims=2), data=st.data())
 def test_tensordot(in_dtypes, out_dtype, shapes, data):