PHP versions removed from .travis.yml file (7.1 and 7.2)

Author: biscolab

.travis.yml

@@ -1,13 +1,11 @@
 language: php
 
 php:
-  - 7.1
-  - 7.2
   - 7.3
   - 7.4
 
 before_script:
   - travis_retry composer self-update
   - travis_retry composer install --prefer-source --no-interaction
 
-fast_finish: true
+fast_finish: true