Removing restriction for near2far monitors with symmetry

tests/test_near2far.py

@@ -124,20 +124,6 @@ def test_n2f_monitors():
         medium=MEDIUM,
     )
 
-    # Make sure server-side n2f monitors raise an error in the presence of symmetry
-    with pytest.raises(SetupError):
-        sim = td.Simulation(
-            size=sim_size,
-            grid_spec=grid_spec,
-            structures=[],
-            sources=[source],
-            monitors=all_monitors,
-            run_time=run_time,
-            boundary_spec=boundary_spec,
-            medium=MEDIUM,
-            symmetry=[1, 0, 0],
-        )
-
 
 def test_n2f_data():
     """Make sure all the near-to-far data structures can be created."""

tidy3d/components/simulation.py

@@ -22,7 +22,7 @@
 from .structure import Structure
 from .source import SourceType, PlaneWave, GaussianBeam, AstigmaticGaussianBeam
 from .monitor import MonitorType, Monitor, FreqMonitor
-from .monitor import AbstractFieldMonitor, AbstractNear2FarMonitor
+from .monitor import AbstractFieldMonitor
 from .viz import add_ax_if_none, equal_aspect
 
 from .viz import MEDIUM_CMAP, PlotParams, plot_params_symmetry
@@ -437,21 +437,6 @@ def _warn_monitor_simulation_frequency_range(cls, val, values):
                 )
         return val
 
-    @pydantic.validator("monitors", always=True)
-    def n2f_monitors_with_symmetry(cls, val, values):
-        """Error if a server-side near-to-far monitor is used with symmetry"""
-        monitors = val
-        symmetry = values.get("symmetry")
-        if not any(symmetry):
-            return val
-        for monitor in monitors:
-            if isinstance(monitor, AbstractNear2FarMonitor):
-                raise SetupError(
-                    "Server-side near-to-far calculation is not available with symmetry. "
-                    "Use the local near-to-far available through the 'RadiationVectors' class."
-                )
-        return val
-
     @pydantic.validator("grid_spec", always=True)
     def _warn_grid_size_too_small(cls, val, values):  # pylint:disable=too-many-locals
         """Warn user if any grid size is too large compared to minimum wavelength in material."""