remove dev stability

.travis.yml

@@ -23,7 +23,6 @@ env:
   global:
     - SYMFONY_PHPUNIT_DIR=.phpunit SYMFONY_PHPUNIT_REMOVE="symfony/yaml" SYMFONY_PHPUNIT_VERSION=5.7
     - SYMFONY_DEPRECATIONS_HELPER=weak
-    - STABILITY=dev
   matrix:
     - TRANSPORT=jackrabbit
     - TRANSPORT=doctrine_dbal
@@ -43,7 +42,7 @@ before_script:
   - bin/console doctrine:phpcr:workspace:create sandbox_test -e=test
   - bin/console doctrine:phpcr:repository:init -e=test
 
-script: php -d memory_limit=-1 vendor/bin/simple-phpunit --debug
+script: vendor/bin/simple-phpunit --debug
 
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   irc: "irc.freenode.org#symfony-cmf"