Remove "--testdox" flag from functional tests (simplify output)

Author: Kirill Nesmeyanov

composer.json

@@ -58,7 +58,7 @@
 
         "test": ["@test:unit", "@test:functional"],
         "test:unit": "phpunit --testdox --testsuite=unit",
-        "test:functional": "phpunit --testdox --testsuite=functional",
+        "test:functional": "phpunit --testsuite=functional",
 
         "linter": "@linter:check",
         "linter:check": "psalm --no-cache",