chore: clean up warnings (#2449)

Author: ilan-gold

pyproject.toml

@@ -175,10 +175,9 @@ filterwarnings_when_strict = [
     "default:anndata will no longer support zarr v2:DeprecationWarning",
     "default:Consolidated metadata is:UserWarning",
     "default:.*Struct:zarr.core.dtype.common.UnstableSpecificationWarning",
+    # Remove when https://github.com/zarr-developers/zarr-python/pull/3979 becomes min
     "default:.*FixedLengthUTF32:zarr.core.dtype.common.UnstableSpecificationWarning",
     "default:Writing zarr v2:UserWarning",
-    # TODO: Remove in conjunction with or before https://github.com/scverse/anndata/pull/1707
-    "default:.*will obey copy-on-write semantics:FutureWarning",
 ]
 python_files = [ "test_*.py" ]
 testpaths = [