refactor: refactor .travis ci buid config

Author: Harrison Ifeanyichukwu

.travis.yml

@@ -8,14 +8,3 @@ before_script:
   - composer install
 script:
   - vendor/bin/phpunit
-jobs:
-  include:
-    - stage: release
-    php: "7.2"
-    before_install:
-      - nvm install 10
-    before_script:
-      - composer self-update
-      - composer install
-    script:
-      - vendor/bin/phpunit