Apply suggestion from @beckermr

Author: beckermr

jax_galsim/gsobject.py

@@ -579,7 +579,6 @@ def _determine_wcs(self, scale, wcs, image, default_wcs=None):
   to indicate that the number of photons should be determined
   from the flux and gain
 - uses a default of ``max_extra_noise=None`` instead of ``max_extra_noise=0``
-  to indicate no limit on the extra noise
 - requires that the ``maxN`` option be a constant since PhotonArrays are allocated
   with ``maxN`` photons when this option is used and arrays in JAX must have static sizes.
 - raises a generic ``Exception`` instead of a more specific exception for some invalid inputs