remove deprecated items (#3794)

* remove deprecated items

whirlpool, ripemd160, unsupportedextension, and the old interfaces

* flake8 and remove a test generator we no longe use

* make it clear we warned you about these things

4 files changed, 1 insertions, 61 deletions

diff --git a/src/cryptography/hazmat/primitives/hashes.py b/src/cryptography/hazmat/primitives/hashes.py
index e1172d9d..1764e9ce 100644
--- a/src/cryptography/hazmat/primitives/hashes.py
+++ b/src/cryptography/hazmat/primitives/hashes.py
@@ -143,36 +143,6 @@ class SHA512(object):
 
 
 @utils.register_interface(HashAlgorithm)
-class RIPEMD160(object):
-    name = "ripemd160"
-    digest_size = 20
-    block_size = 64
-
-
-RIPEMD160 = utils.deprecated(
-    RIPEMD160,
-    __name__,
-    "The RIPEMD160 hash was deprecated in version 1.9.",
-    utils.DeprecatedIn19
-)
-
-
-@utils.register_interface(HashAlgorithm)
-class Whirlpool(object):
-    name = "whirlpool"
-    digest_size = 64
-    block_size = 64
-
-
-Whirlpool = utils.deprecated(
-    Whirlpool,
-    __name__,
-    "The Whirlpool hash was deprecated in version 1.9.",
-    utils.DeprecatedIn19
-)
-
-
-@utils.register_interface(HashAlgorithm)
 class MD5(object):
     name = "md5"
     digest_size = 16
diff --git a/src/cryptography/hazmat/primitives/interfaces.py b/src/cryptography/hazmat/primitives/interfaces.py
deleted file mode 100644
index c9fdb3bf..00000000
--- a/src/cryptography/hazmat/primitives/interfaces.py
+++ /dev/null
@@ -1,17 +0,0 @@
-# This file is dual licensed under the terms of the Apache License, Version
-# 2.0, and the BSD License. See the LICENSE file in the root of this repository
-# for complete details.
-
-from __future__ import absolute_import, division, print_function
-
-from cryptography import utils
-from cryptography.hazmat.primitives.mac import MACContext as _MACContext
-
-
-MACContext = utils.deprecated(
-    _MACContext,
-    __name__,
-    "MACContext was moved to cryptography.hazmat.primitives.mac.MACContext "
-    "in version 1.9.",
-    utils.DeprecatedIn19
-)
diff --git a/src/cryptography/x509/__init__.py b/src/cryptography/x509/__init__.py
index b1a32ef6..3b747302 100644
--- a/src/cryptography/x509/__init__.py
+++ b/src/cryptography/x509/__init__.py
@@ -4,7 +4,6 @@
 
 from __future__ import absolute_import, division, print_function
 
-from cryptography import utils
 from cryptography.x509 import certificate_transparency
 from cryptography.x509.base import (
     Certificate, CertificateBuilder, CertificateRevocationList,
@@ -25,7 +24,7 @@ from cryptography.x509.extensions import (
     NameConstraints, NoticeReference, OCSPNoCheck, PolicyConstraints,
     PolicyInformation, PrecertificateSignedCertificateTimestamps, ReasonFlags,
     SubjectAlternativeName, SubjectKeyIdentifier, UnrecognizedExtension,
-    UnsupportedExtension, UserNotice
+    UserNotice
 )
 from cryptography.x509.general_name import (
     DNSName, DirectoryName, GeneralName, IPAddress, OtherName, RFC822Name,
@@ -110,13 +109,6 @@ OID_INVALIDITY_DATE = CRLEntryExtensionOID.INVALIDITY_DATE
 OID_CA_ISSUERS = AuthorityInformationAccessOID.CA_ISSUERS
 OID_OCSP = AuthorityInformationAccessOID.OCSP
 
-UnsupportedExtension = utils.deprecated(
-    UnsupportedExtension,
-    __name__,
-    "UnsupportedExtension is no longer necessary, it is never raised",
-    utils.DeprecatedIn19
-)
-
 __all__ = [
     "certificate_transparency",
     "load_pem_x509_certificate",
@@ -128,7 +120,6 @@ __all__ = [
     "random_serial_number",
     "InvalidVersion",
     "DuplicateExtension",
-    "UnsupportedExtension",
     "ExtensionNotFound",
     "UnsupportedGeneralNameType",
     "NameAttribute",
diff --git a/src/cryptography/x509/extensions.py b/src/cryptography/x509/extensions.py
index 1b64f4a5..d90465b2 100644
--- a/src/cryptography/x509/extensions.py
+++ b/src/cryptography/x509/extensions.py
@@ -54,10 +54,6 @@ class DuplicateExtension(Exception):
         self.oid = oid
 
 
-class UnsupportedExtension(Exception):
-    pass
-
-
 class ExtensionNotFound(Exception):
     def __init__(self, msg, oid):
         super(ExtensionNotFound, self).__init__(msg)