updated travis.yml

.travis.yml

@@ -4,5 +4,3 @@ solution: "./SketchAssistant/SketchAssistant.sln"
 install:
   - nuget restore "./SketchAssistant/SketchAssistant.sln"
   - nuget install NUnit.ConsoleRunner -Version 3.9.0 -OutputDirectory testrunner
-before_script:
-  - tree