ci/pylintrc: disable deprecated-method

Pylint deprecated-method report interferes with asyncio.ensure_future
compatibility monkeypatch. The function asyncio.async was renamed
between 3.4.3 (fc23) and 3.4.4 (what is currently on Travis). For
reference, debian stable has 3.4.2.

ci/pylintrc

@@ -4,10 +4,13 @@ ignore=tests,backup.py
 
 [MESSAGES CONTROL]
 # abstract-class-little-used: see http://www.logilab.org/ticket/111138
+# deprecated-method:
+#   enable again after disabling py-3.4.3 asyncio.ensure_future compat hack
 disable=
   abstract-class-little-used,
   bad-continuation,
   cyclic-import,
+  deprecated-method,
   duplicate-code,
   file-ignored,
   fixme,
@@ -17,8 +20,6 @@ disable=
   missing-docstring,
   star-args
 
-confidence=HIGH,INFERENCE,INFERENCE_FAILURE
-
 [REPORTS]
 
 # Set the output format. Available formats are text, parseable, colorized, msvs