Removed default environment variables
Removed default environment variables

These override the environment variables defined in `.env.php` of a Laravel installation. This resulted in about half an hour of tracking down a 'bug'.

This is because `https://github.com/vlucas/phpdotenv` won't override environment variables by default.
wardcraigj/jukebox,nickfan/homestead,juan2ramos/agroseller,crynobone/homestead,milkyway-multimedia/homestead,distr0yer/laravel,milkyway-multimedia/homestead,hibriiiiidge/LaravelProject,wardcraigj/jukebox,f3rland/homestead-mssql,crynobone/homestead,svpernova09/homestead,juan2ramos/agroseller,MageParts/homestead,distr0yer/laravel,svpernova09/homestead,tdondich/pmdev,ananastech/fitnessapp,justinmoh/mockingj,gratif/homestead,distr0yer/laravel,jordanramstad/homestead,jordanramstad/homestead,shadow-droid/laravel-homestead,paulgeneres/homestead,ananastech/fitnessapp,NemoD503/habitat,davidrushton/homestead,distr0yer/laravel,anggras/homestead,leliviakid/TODO-Laravel-app,laravel/homestead,anggras/homestead,milkyway-multimedia/homestead,MageParts/homestead,johnpbloch/homestead,banaba0207/homestead,davidrushton/homestead,svpernova09/homestead,johnpbloch/homestead,leliviakid/TODO-Laravel-app,shadow-droid/laravel-homestead,paulgeneres/homestead,hibriiiiidge/LaravelProject,NemoD503/habitat,laravel/homestead,wardcraigj/jukebox,jason-chang/centstead,davidrushton/homestead,juan2ramos/agroseller,gratif/homestead,nickfan/homestead,leliviakid/TODO-Laravel-app,gratif/homestead,leliviakid/TODO-Laravel-app,crynobone/homestead,johnpbloch/homestead,justinmoh/mockingj,ananastech/fitnessapp,juan2ramos/agroseller,NemoD503/habitat,anggras/homestead,ananastech/fitnessapp,distr0yer/laravel,jason-chang/centstead,hibriiiiidge/LaravelProject,nickfan/homestead,hibriiiiidge/LaravelProject,wardcraigj/jukebox,justinmoh/mockingj,paulgeneres/homestead,tdondich/pmdev,ananastech/fitnessapp,MageParts/homestead,banaba0207/homestead,banaba0207/homestead,juan2ramos/agroseller,f3rland/homestead-mssql,tdondich/pmdev,wardcraigj/jukebox,shadow-droid/laravel-homestead,jordanramstad/homestead,banaba0207/homestead,f3rland/homestead-mssql,laravel/homestead