Removed duplicated Sonar scanner version variable

Author: jaaufauvre

.travis.yml

@@ -14,7 +14,6 @@ matrix:
       env:
         # Do not run analysis on PR (secure env variables like SONAR_TOKEN are not always available)
         - WITH_SONAR_ANALYSIS=$([ "$TRAVIS_PULL_REQUEST" = "false" ] && echo true || echo false)
-        - SONAR_SCANNER_VERSION=3.3.0.1492
 before_install:
   - "composer --no-plugins --no-scripts install"
   - "composer --no-plugins --no-scripts dump-autoload -o"