Remove doc deployment steps from travis

.travis.yml

@@ -4,23 +4,18 @@ matrix:
     include:
     - python: "2.7"
       env:
-          - ALLOW_DOC_DEPLOY=false
           - ALLOW_PYPI_DEPLOY=false
     - python: "3.4"
       env:
-          - ALLOW_DOC_DEPLOY=false
           - ALLOW_PYPI_DEPLOY=false
     - python: "3.5"
       env:
-          - ALLOW_DOC_DEPLOY=false
           - ALLOW_PYPI_DEPLOY=false
     - python: "3.6"
       env:
-          - ALLOW_DOC_DEPLOY=true
           - ALLOW_PYPI_DEPLOY=true
     - python: "3.7"
       env:
-          - ALLOW_DOC_DEPLOY=false
           - ALLOW_PYPI_DEPLOY=false
 addons:
   apt:
@@ -34,15 +29,12 @@ before_install:
 install:
   - pip install -U pip setuptools wheel
   - pip install -U pytest pytest-xdist pytest-cov coveralls
-  - sh -c "if [ '$ALLOW_DOC_DEPLOY' = 'true' ]; then pip install -r doc/requirements.txt; fi"
   - pip install -e .
 script:
-  - sh -c "if [ '$ALLOW_DOC_DEPLOY' = 'true' ]; then travis-sphinx build --source=doc/source --nowarn; fi"
   - py.test --cov-config .coveragerc --cov=rtlsdr
   - py.test --cov-append --cov-config .coveragerc --cov=rtlsdr --boxed --no-overrides --pyargs tests/no_override*
 after_success:
   - coveralls
-  - sh -c "if [ '$ALLOW_DOC_DEPLOY' = 'true' ]; then travis-sphinx deploy; fi"
 deploy:
   provider: pypi
   distributions: "sdist bdist_wheel"

doc/requirements.txt

@@ -1,3 +1,2 @@
 Sphinx>=2.3.1
 sphinx_rtd_theme
-travis-sphinx>=2.1.2