Addon test docs, remove stray deprecated events

Fixes #1572

docs/scripting/overview.rst

@@ -131,6 +131,23 @@ purposes. You can use it as follows:
    :language: python
 
 
+Testing
+-------
+
+Mitmproxy includes a number of helpers for testing addons. The
+``mitmproxy.test.taddons`` module contains a context helper that takes care of
+setting up and tearing down the addon event context. The
+``mitmproxy.test.tflow`` module contains helpers for quickly creating test
+flows. Pydoc is the canonical reference for these modules, and mitmproxy's own
+test suite is an excellent source of examples of usage. Here, for instance, is
+the mitmproxy unit tests for the `anticache` option, demonstrating a good
+cross-section of the test helpers:
+
+.. literalinclude:: ../../test/mitmproxy/addons/test_anticache.py
+   :caption: :src:`test/mitmproxy/addons/test_anticache.py`
+   :language: python
+
+
 Developing scripts
 ------------------
 

mitmproxy/events.py

@@ -21,9 +21,6 @@ Events = frozenset([
     "responseheaders",
     "error",
 
-    "intercept",
-    "resume",
-
     "websocket_handshake",
     "websocket_start",
     "websocket_message",