remove php-coveralls/php-coveralls from requirements

Author: gam6itko

composer.json

@@ -30,8 +30,7 @@
         "exclude-from-classmap": ["/tests"]
     },
     "require-dev": {
-        "phpunit/phpunit": "^7.0||^8.0||^9.0",
-        "php-coveralls/php-coveralls": "^2.2"
+        "phpunit/phpunit": "^7.0||^8.0||^9.0"
     },
     "autoload-dev": {
         "psr-4": {