Remove blosc init/destroy at the numcodecs level

Author: joshmoore

numcodecs/__init__.py

@@ -44,14 +44,6 @@
     from numcodecs import blosc
     from numcodecs.blosc import Blosc
     register_codec(Blosc)
-    # initialize blosc
-    try:
-        ncores = multiprocessing.cpu_count()
-    except OSError:  # pragma: no cover
-        ncores = 1
-    # blosc.init()
-    _blosc.set_nthreads(min(8, ncores))
-    atexit.register(_blosc.destroy)
 except ImportError:  # pragma: no cover
     pass