Remove Python 3.4 from AppVeyor and Travis configs

Author: altendky

.travis.yml

@@ -3,7 +3,6 @@ language: python
 matrix:
   include:
     - python: 2.7
-    - python: 3.4
     - python: 3.5
     - python: 3.6
     - python: 3.7

appveyor.yml

@@ -8,12 +8,6 @@ environment:
     - TOXENV: py27-defaultreactor
       PYTHON: "C:\\Python27-x64"
 
-    - TOXENV: py34-defaultreactor
-      PYTHON: "C:\\Python34"
-
-    - TOXENV: py34-defaultreactor
-      PYTHON: "C:\\Python34-x64"
-
     - TOXENV: py35-defaultreactor, win-py35-qt5reactor, py35-asyncioreactor
       PYTHON: "C:\\Python35"