tests: drop testing python 3.4

Author: ariddell

.travis.yml

@@ -14,11 +14,9 @@ compiler:
   - gcc
 env:
   - TRAVIS_PYTHON_VERSION=2.7 TESTS_EXCLUDE_RE='^test_[a-p].*\.py'
-  - TRAVIS_PYTHON_VERSION=3.4 TESTS_EXCLUDE_RE='^test_[a-p].*\.py'
   - TRAVIS_PYTHON_VERSION=3.5 TESTS_EXCLUDE_RE='^test_[a-p].*\.py'
   - TRAVIS_PYTHON_VERSION=3.6 TESTS_EXCLUDE_RE='^test_[a-p].*\.py'
   - TRAVIS_PYTHON_VERSION=2.7 TESTS_EXCLUDE_RE='^test_[^a-p].*\.py'
-  - TRAVIS_PYTHON_VERSION=3.4 TESTS_EXCLUDE_RE='^test_[^a-p].*\.py'
   - TRAVIS_PYTHON_VERSION=3.5 TESTS_EXCLUDE_RE='^test_[^a-p].*\.py'
   - TRAVIS_PYTHON_VERSION=3.6 TESTS_EXCLUDE_RE='^test_[^a-p].*\.py'
 notifications: