Travis remove superfluous PHP version (#3492)

.travis.yml

@@ -18,18 +18,6 @@ jobs:
         - COMPOSER_BIN=$(composer global config --absolute bin-dir)
         - $COMPOSER_BIN/phpunit --bootstrap ./tests/bootstrap.php --verbose ./tests
         - $COMPOSER_BIN/phpcs . -p -s
-    - name: "PHP 7.4 Syntax, linter and tests"
-      php: "7.4"
-      install:
-        - composer global require squizlabs/php_codesniffer
-        - composer global require phpunit/phpunit ^9
-      script:
-        - phpenv rehash
-        - find . -name \*.php -print0 | xargs -0 -n1 -P4 php -l 1>/dev/null 2>php-l-results
-        - if [ -s php-l-results ]; then cat php-l-results; exit 1; fi
-        - COMPOSER_BIN=$(composer global config --absolute bin-dir)
-        - $COMPOSER_BIN/phpunit --bootstrap ./tests/bootstrap.php --verbose ./tests
-        - $COMPOSER_BIN/phpcs . -p -s
     - name: "PHP 5.6 Syntax"
       php: "5.6"
       script: