Remove some numpy dev xfails

Author: asmeurer

numpy-dev-xfails.txt

@@ -8,14 +8,10 @@ array_api_tests/test_data_type_functions.py::test_finfo[float32]
 array_api_tests/test_has_names.py::test_has_names[array_method-to_device]
 array_api_tests/test_has_names.py::test_has_names[array_attribute-device]
 
-# linalg tests require https://github.com/data-apis/array-api-tests/pull/101
-# cleanups. Also some tests are using .mT
+# linalg tests require cleanups
+# https://github.com/data-apis/array-api-tests/pull/101
 array_api_tests/test_linalg.py::test_solve
 
-# Array methods and attributes not already on np.ndarray cannot be wrapped
-array_api_tests/test_signatures.py::test_array_method_signature[__array_namespace__]
-array_api_tests/test_signatures.py::test_array_method_signature[to_device]
-
 # NumPy deviates in some special cases for floordiv
 array_api_tests/test_special_cases.py::test_binary[floor_divide(x1_i is +infinity and isfinite(x2_i) and x2_i > 0) -> +infinity]
 array_api_tests/test_special_cases.py::test_binary[floor_divide(x1_i is +infinity and isfinite(x2_i) and x2_i < 0) -> -infinity]