remove rigid id from convert mbuild, remove rigid id prop from abstra…

…ct site

gmso/abc/abstract_site.py

@@ -220,12 +220,6 @@ def __repr__(self):
         alias="position",
     )
 
-    rigid_id_: Optional[int] = Field(
-        None,
-        description="Rigid body ID used to assign rigid body contraints in HOOMD-Blue topologies.",
-        alias="rigid_id",
-    )
-
     model_config = ConfigDict(
         alias_to_fields={
             "name": "name_",
@@ -267,11 +261,6 @@ def residue(self):
         """Return the residue assigned to the site."""
         return self.__dict__.get("residue_")
 
-    @property
-    def rigid_id(self):
-        """Return the rigid body ID for this atom."""
-        return self.__dict__.get("rigid_id_")
-
     @field_serializer("position_")
     def serialize_position(self, position_: PositionType):
         return unyt_to_dict(position_)

gmso/external/convert_mbuild.py

@@ -251,7 +251,6 @@ def _parse_particle(particle_map, site):
         charge=charge,
         mass=mass,
     )
-    particle.rigid_id = site.rigid_id
     particle_map[site] = particle
     return particle
 
@@ -273,7 +272,6 @@ def _parse_site(site_map, particle, search_method, infer_element=False):
         element=ele,
         charge=charge,
         mass=mass,
-        rigid_id=particle.rigid_id,
         molecule=site_map[particle]["molecule"],
         residue=site_map[particle]["residue"],
         group=site_map[particle]["group"],

gmso/tests/test_convert_mbuild.py

@@ -259,14 +259,3 @@ def test_nontop_level_compound(self, mb_ethane):
         cpd.add(mb_ethane)
         with pytest.raises(AssertionError):
             from_mbuild(mb_ethane)
-
-    def test_rigid_ids(self, mb_ethane):
-        box = mb.fill_box(mb_ethane, n_compounds=3, box=[2, 2, 2])
-        for i, child in enumerate(box.children):
-            for p in child.particles():
-                p.rigid_id = i
-
-        top = from_mbuild(box)
-        assert set([site.rigid_id for site in top.sites]) == {0, 1, 2}
-        for particle, site in zip(box.particles(), top.sites):
-            assert particle.rigid_id == site.rigid_id