Drop support for Python 3.4

Change-Id: I7ef3a9254681727a6d48b832672ce432f7b7cbf6

.travis.yml

@@ -1,6 +1,5 @@
 language: python
 python:
-  - "3.4"
   - "3.5"
   - "3.6"
   - "3.7"

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 1.6
-envlist = py{34,35,36,37}-{flake8,unit,unit-min,unitbase,bandit,prospector,sphinx}
+envlist = py{35,36,37}-{flake8,unit,unit-min,unitbase,bandit,prospector,sphinx}
 skip_missing_interpreters = True
 
 [testenv]
@@ -9,7 +9,6 @@ basepython =
     py37: python3.7
     py36: python3.6
     py35: python3.5
-    py34: python3.4
 whitelist_externals = sed
 description =
     flake8: Style consistency checker
@@ -23,7 +22,6 @@ description =
     py37: (Python 3.7)
     py36: (Python 3.6)
     py35: (Python 3.5)
-    py34: (Python 3.4)
 envdir = {toxworkdir}/py36-tests
 commands =
     flake8: flake8 setup.py cumin doc
@@ -118,34 +116,6 @@ envdir = {toxworkdir}/py35-tests
 [testenv:py35-integration-min]
 envdir = {toxworkdir}/py35-tests-min
 
-[testenv:py34-flake8]
-envdir = {toxworkdir}/py34-tests
-
-[testenv:py34-unit]
-envdir = {toxworkdir}/py34-tests
-
-[testenv:py34-unit-min]
-envdir = {toxworkdir}/py34-tests-min
-
-[testenv:py34-unitbase]
-envdir = {toxworkdir}/py34-tests-base
-deps = .[tests-base]
-
-[testenv:py34-bandit]
-envdir = {toxworkdir}/py34-tests
-
-[testenv:py34-prospector]
-envdir = {toxworkdir}/py34-tests
-
-[testenv:py34-sphinx]
-envdir = {toxworkdir}/py34-tests
-
-[testenv:py34-integration]
-envdir = {toxworkdir}/py34-tests
-
-[testenv:py34-integration-min]
-envdir = {toxworkdir}/py34-tests-min
-
 [flake8]
 max-line-length = 120
 statistics = True