Arm backend: Upgrade vela to 4.4.1

Differential Revision: D84357937

Pull Request resolved: #14890

(cherry picked from commit 1dc0e0e)

Author: oscarandersson8218

backends/arm/requirements-arm-ethos-u.txt

@@ -3,4 +3,4 @@
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
 
-ethos-u-vela == 4.4.0
+ethos-u-vela == 4.4.1

backends/arm/test/ops/test_multihead_attention.py

@@ -3,7 +3,6 @@
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
 
-import pytest
 import torch
 from executorch.backends.arm.test import common
 from executorch.backends.arm.test.tester.test_pipeline import (
@@ -69,7 +68,6 @@ def test_multihead_attention_tosa_INT(test_data):
     "test_data",
     test_suite,
 )
-@pytest.mark.xfail(reason="MLETORCH-1102: Numerical issues on FVP")
 @common.XfailIfNoCorstone300
 def test_multihead_attention_u55_INT(test_data: input_t1):
     test_data, module = test_data()
@@ -91,7 +89,6 @@ def test_multihead_attention_u55_INT(test_data: input_t1):
     "test_data",
     test_suite,
 )
-@pytest.mark.xfail(reason="MLETORCH-1102: Numerical issues on FVP")
 @common.XfailIfNoCorstone320
 def test_multihead_attention_u85_INT(test_data: input_t1):
     test_data, module = test_data()