Revert "Bug fix: select sniffs would not run"

This reverts commit c21945c.

Author: kukulich

composer.json

@@ -23,10 +23,15 @@
 		"phpunit/phpunit": "7.5.20|8.5.2|9.1.2",
 		"dealerdirect/phpcodesniffer-composer-installer": "0.6.2"
 	},
+	"autoload": {
+		"psr-4": {
+			"SlevomatCodingStandard\\": "SlevomatCodingStandard"
+		}
+	},
 	"autoload-dev": {
 		"psr-4": {
-			"SlevomatCodingStandard\\": ["SlevomatCodingStandard", "tests"],
-			"SlevomatCodingStandard\\PHPStan\\": "build/PHPStan"
+			"SlevomatCodingStandard\\PHPStan\\": "build/PHPStan",
+			"SlevomatCodingStandard\\": "tests"
 		}
 	},
 	"extra": {