remove unneeded init in ECB class, add warning to docs for ECB mode
diff --git a/cryptography/primitives/block/modes.py b/cryptography/primitives/block/modes.py
index 0bf8010..ac3392c 100644
--- a/cryptography/primitives/block/modes.py
+++ b/cryptography/primitives/block/modes.py
@@ -24,6 +24,3 @@
class ECB(object):
name = "ECB"
-
- def __init__(self):
- super(ECB, self).__init__()
diff --git a/docs/primitives/symmetric-encryption.rst b/docs/primitives/symmetric-encryption.rst
index 8a9bbbd..d0429d4 100644
--- a/docs/primitives/symmetric-encryption.rst
+++ b/docs/primitives/symmetric-encryption.rst
@@ -72,6 +72,7 @@
Insecure Modes
--------------
+.. warning:: Do not use. This is an insecure mode.
.. class:: cryptography.primitives.block.modes.ECB()
ECB (Electronic Code Book) is the simplest mode of operation for block