.travis.yml: removed unused SINGVER (#853)

* Appveyor: lxml has wheels for py3.7 again

Author: mr-c

.travis.yml

@@ -3,9 +3,6 @@ sudo: required
 services:
   - docker
 
-env:
-  - SINGVER=2.5.1
-
 before_install:
 - wget -O- http://neuro.debian.net/lists/trusty.us-nh.full | sudo tee /etc/apt/sources.list.d/neurodebian.sources.list
 - sudo apt-key add .travis.singularity_key.txt

appveyor.yml

@@ -35,12 +35,6 @@ install:
   - "%PYTHON%\\python.exe -m pip install -U codecov pytest-xdist pytest-cov galaxy-lib -rtest-requirements.txt"
     # Note the use of a `^` to escape the `>`
 
-for:
-  - matrix:
-      only: [ { PYTHON_VERSION: "3.7.x" } ]
-    before_build:
-      - "%PYTHON%\\python.exe -m pip install https://download.lfd.uci.edu/pythonlibs/l8ulg3xw/lxml-4.2.3-cp37-cp37m-win_amd64.whl"
-
 build_script:
   - "%PYTHON%\\python.exe -m pip install -rrequirements.txt"