Remove deprecated submodule unpack (#385)

Author: methane

msgpack/_unpacker.pyx

@@ -200,14 +200,6 @@ def unpackb(object packed, *, object object_hook=None, object list_hook=None,
     raise ValueError("Unpack failed: error = %d" % (ret,))
 
 
-def unpack(object stream, **kwargs):
-    PyErr_WarnEx(
-        DeprecationWarning,
-        "Direct calling implementation's unpack() is deprecated, Use msgpack.unpack() or unpackb() instead.", 1)
-    data = stream.read()
-    return unpackb(data, **kwargs)
-
-
 cdef class Unpacker(object):
     """Streaming unpacker.
 

msgpack/fallback.py

@@ -131,16 +131,6 @@ def _get_data_from_buffer(obj):
     return view
 
 
-def unpack(stream, **kwargs):
-    warnings.warn(
-        "Direct calling implementation's unpack() is deprecated, Use msgpack.unpack() or unpackb() instead.",
-        DeprecationWarning,
-        stacklevel=2,
-    )
-    data = stream.read()
-    return unpackb(data, **kwargs)
-
-
 def unpackb(packed, **kwargs):
     """
     Unpack an object from `packed`.