fix bug velocity unit (#1130)

* Comment deprecated tests

* UPdate lsdyna tests for velocity units

* Remove unneeded import

* Update tests and check version for lsdyna tests

tests/test_lsdyna.py

@@ -2,6 +2,7 @@
 import pytest
 import conftest
 from ansys.dpf import core as dpf
+from ansys.dpf.core.check_version import server_meet_version
 
 
 @pytest.mark.skipif(
@@ -72,8 +73,12 @@ def test_lsdyna_generic(d3plot_files):
     global_velocity_model = model.results.global_velocity().eval()
 
     assert np.allclose(global_velocity_fc[0].data[0], global_velocity_model[0].data[0])
-    # assert global_velocity_fc[0].unit == "mm*Hz"
-    # assert global_velocity_model[0].unit == "mm*Hz"
+    if server_meet_version("7.1", global_velocity_op._server):
+        assert global_velocity_fc[0].unit == "mm/s"
+        assert global_velocity_model[0].unit == "mm/s"
+    else:
+        assert global_velocity_fc[0].unit == "mm*Hz"
+        assert global_velocity_model[0].unit == "mm*Hz"
 
     # ------------------------------------------------- Initial Coordinates