Remove PHP-CS-Fixer

It is not the first time that after a PHP-CS-Fixer upgrade our build
fails. Also, I've seemed a couple of files that have a wrong coding
standard, but PHP-CS-Fixer does not indicate failure for them.

This commit will remove the library as a dependency.

I plan to introduce PHP_CodeSniffer as soon as possible.

Signed-off-by: Henrique Moody <henriquemoody@gmail.com>

.travis.yml

@@ -5,7 +5,6 @@ language: php
 cache:
   directories:
     - $HOME/.composer/cache
-    - $HOME/.php-cs-fixer
 
 matrix:
   include:
@@ -35,10 +34,6 @@ script:
     if [[ "${TRAVIS_PHP_VERSION}" == "7.2" ]]; then
       vendor/bin/docheader check library tests
     fi
-  - |
-    if [[ "${TRAVIS_PHP_VERSION}" == "7.2" ]]; then
-      vendor/bin/php-cs-fixer --diff --dry-run --verbose fix
-    fi
   - |
     if [[ "${TRAVIS_PHP_VERSION}" == "7.2" ]]; then
       vendor/bin/phpstan analyze

CONTRIBUTING.md

@@ -250,20 +250,6 @@ No test should fail.
 You can tweak the PHPUnit's settings by copying `phpunit.xml.dist` to `phpunit.xml`
 and changing it according to your needs.
 
-## Coding style and standards
-
-We follow the [PSR-2][] coding style and [PSR-4][] autoloading standard.
-
-There are some preferences regarding code style which you can easily adhere to
-by using [php-cs-fixer][].
-
-This will format all PHP files consistently using the preferences of this
-project.
-
-```sh
-$ vendor/bin/php-cs-fixer fix
-```
-
 ***
 See also:
 

composer.json

@@ -18,7 +18,6 @@
     },
     "require-dev": {
         "egulias/email-validator": "^2.0",
-        "friendsofphp/php-cs-fixer": "^2.8",
         "malukenho/docheader": "^0.1.4",
         "mikey179/vfsStream": "^1.6",
         "phpstan/phpstan": "^0.10.3",
@@ -32,8 +31,7 @@
         "ext-mbstring": "Multibyte String Functions",
         "egulias/email-validator": "Strict (RFC compliant) email validation",
         "symfony/validator": "Use Symfony validator through Respect\\Validation",
-        "zendframework/zend-validator": "Use Zend Framework validator through Respect\\Validation",
-        "friendsofphp/php-cs-fixer": "Fix PSR2 and other coding style issues"
+        "zendframework/zend-validator": "Use Zend Framework validator through Respect\\Validation"
     },
     "autoload": {
         "psr-4": {
@@ -53,14 +51,12 @@
     },
     "scripts": {
         "docheader": "docheader check library/ tests/",
-        "php-cs-fixer": "php-cs-fixer fix",
         "phpstan": "phpstan analyze",
         "phpunit": "phpunit",
         "phpunit-integration": "phpunit --testsuite=integration",
         "phpunit-unit": "phpunit --testsuite=unit",
         "qa": [
             "@docheader",
-            "@php-cs-fixer",
             "@phpstan",
             "@phpunit"
         ]