Remove sofa/eloquence-validable package

[et-nik]

Remove sofa/eloquence-validable package.
The package contains many bugs and unstable things.

Reasons:

1. See User saving with an error #2
2. Factory create not working correctly. Tests sometimes fail:

Caused by
ReflectionException: Class config does not exist

/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Container/Container.php:803
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Container/Container.php:681
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Container/Container.php:629
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Foundation/Application.php:776
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Container/Container.php:1245
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Database/DatabaseManager.php:270
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Database/DatabaseManager.php:101
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Database/DatabaseManager.php:77
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Validation/DatabasePresenceVerifier.php:125
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Validation/DatabasePresenceVerifier.php:49
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Validation/Concerns/ValidatesAttributes.php:756
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Validation/Validator.php:457
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Validation/Validator.php:300
/home/nikita/Git/gameap/vendor/sofa/eloquence-validable/src/Validable.php:69
/home/nikita/Git/gameap/vendor/sofa/eloquence-validable/src/Validable/Observer.php:31
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php:366
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php:196
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php:169
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Concerns/HasEvents.php:188
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php:787
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php:667
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Database/Eloquent/FactoryBuilder.php:219
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Support/Traits/EnumeratesValues.php:176
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Database/Eloquent/FactoryBuilder.php:220
/home/nikita/Git/gameap/vendor/laravel/framework/src/Illuminate/Database/Eloquent/FactoryBuilder.php:181
/home/nikita/Git/gameap/tests/Feature/ServersPermissionsTest.php:40

[et-nik]

Removed