feat: use astropy unit conversion API

Signed-off-by: nstarman <[email protected]>

src/unxt/_interop/unxt_interop_astropy/quantity.py

@@ -7,8 +7,6 @@
 import astropy.units as u
 from astropy.coordinates import Angle as AstropyAngle, Distance as AstropyDistance
 from astropy.units import Quantity as AstropyQuantity
-from jaxtyping import Array
-from packaging.version import Version
 from plum import conversion_method, dispatch
 
 import quaxed.numpy as jnp
@@ -22,7 +20,6 @@
     Quantity,
     UncheckedQuantity,
 )
-from unxt._interop.optional_deps import OptDeps
 
 # ============================================================================
 # AbstractQuantity
@@ -243,46 +240,6 @@ def convert_astropy_quantity_to_unxt_distmod(q: AstropyQuantity, /) -> DistanceM
 AstropyUnit: TypeAlias = u.UnitBase | u.Unit | u.FunctionUnitBase | u.StructuredUnit
 
 
-if Version("7.0") <= OptDeps.ASTROPY.version:
-
-    def _apy7_unit_to(self: AstropyUnit, other: AstropyUnit, value: Array, /) -> Array:
-        return self.to(other, value)
-
-else:
-
-    def _apy7_unit_to(self: AstropyUnit, other: AstropyUnit, value: Array, /) -> Array:
-        """Convert the value to the other unit."""
-        # return self.get_converter(Unit(other), equivalencies)(value)
-        # First see if it is just a scaling.
-        try:
-            scale = self._to(other)
-        except u.UnitsError:
-            pass
-        else:
-            return scale * value
-
-        # if that doesn't work, maybe we can do it with equivalencies?
-        try:
-            return self._apply_equivalencies(
-                self, other, self._normalize_equivalencies([])
-            )(value)
-        except u.UnitsError as exc:
-            # Last hope: maybe other knows how to do it?
-            # We assume the equivalencies have the unit itself as first item.
-            # TODO: maybe better for other to have a `_back_converter` method?
-            if hasattr(other, "equivalencies"):
-                for funit, tunit, _, b in other.equivalencies:
-                    if other is funit:
-                        try:
-                            converter = self.get_converter(tunit, [])
-                        except Exception:  # noqa: BLE001, S110  # pylint: disable=W0718
-                            pass
-                        else:
-                            return b(converter(value))
-
-            raise exc  # noqa: TRY201
-
-
 @dispatch  # type: ignore[misc]
 def uconvert(unit: AstropyUnit, x: AbstractQuantity, /) -> AbstractQuantity:
     """Convert the quantity to the specified units.
@@ -312,4 +269,4 @@ def uconvert(unit: AstropyUnit, x: AbstractQuantity, /) -> AbstractQuantity:
     # if isinstance(x.value, jax.core.Tracer) and not can_convert_unit(x.unit, u):
     #     return x.value
 
-    return replace(x, value=_apy7_unit_to(x.unit, unit, x.value), unit=unit)
+    return replace(x, value=x.unit.to(unit, x.value), unit=unit)