remove travis

.github/workflows/nodejs.yml

@@ -15,8 +15,7 @@ jobs:
       with:
         node-version: ${{ matrix.node-version }}
     - name: npm install, build, and test
-      run: |
-        npm i
-        npm test
+      run: npm i
+      run: npm test
       env:
         CI: true

.travis.yml

@@ -1,18 +0,0 @@
-language: node_js
-node_js:
-  - "12"
-  - "11"
-  - "10"
-  - "9"
-  - "8"
-  - "6"
-os:
-  - linux
-  - osx
-# - windows
-sudo: false
-install:
-  - npm --version
-  - npm install
-script:
-  - npm test