Minor Travis CI config cleanups

.travis.yml

@@ -9,7 +9,7 @@ before_install:
 install:
   - "pip install -r requirements.txt"
   - "pip install coveralls"
-  - "sudo apt-get -yV install hddtemp hdparm"
+  - "sudo apt-get -V install hddtemp hdparm"
 script:
   - "coverage run --source=hddfancontrol setup.py test"
 after_success:
@@ -17,7 +17,7 @@ after_success:
 before_deploy:
   - "sudo add-apt-repository -y ppa:marutter/c2d4u"  # to get newer pandoc
   - "sudo apt-get -q update"
-  - "sudo apt-get -yV install pandoc"
+  - "sudo apt-get -V install pandoc"
   - "pip install pypandoc"
 deploy:
   provider: pypi