Update travis dependencies for bblfsh/client-go.v3

Signed-off-by: Carlos Martín <[email protected]>

Author: carlosms

.travis.yml

@@ -3,28 +3,15 @@ language: go
 services:
   - docker
 
-addons:
-  apt:
-    sources:
-    - ubuntu-toolchain-r-test
-    packages:
-    - gcc-6
-    - g++-6
-
 go:
-  - "1.10.x"
+  - "1.11.x"
 
 before_install:
   - . $HOME/.nvm/nvm.sh
   - nvm install 8
   - nvm use 8
   - npm install -g yarn
 
-install:
-  - sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-6 90
-  - sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 90
-  - make dependencies
-
 stages:
   - name: validate and build
   - name: release to github