Fix typos and bugs in Travis config file

Forgot to change one of the TEST_TYPEs to TEST_SUITE.
-eq not working, trying == instead.
Cache doesn't seem to be working, removed.

.travis.yml

@@ -14,14 +14,11 @@ matrix:
   exclude:
   - python: 2.6
     # Flake8 no longer supports Python 2.6
-    env: TEST_TYPE=flake8
+    env: TEST_SUITE=flake8
 
 # Use new Travis infrastructure (Docker can't sudo yet)
 sudo: false
 
-# Cache dependencies
-cache: pip
-
 # Install various dependencies
 install:
   - pip install coveralls
@@ -40,7 +37,7 @@ before_script:
 script: share/spack/qa/run-$TEST_SUITE-tests
 
 after_success:
-  - if [[ $TEST_SUITE == unit && $TRAVIS_PYTHON_VERSION -eq 2.7 ]]; then coveralls; fi
+  - if [[ $TEST_SUITE == unit && $TRAVIS_PYTHON_VERSION == 2.7 ]]; then coveralls; fi
 
 notifications:
   email: