fix: use getSniffName() from slevomat's testcase (#137)

Author: simPod

Diff for: composer.json

@@ -16,7 +16,7 @@
     "require": {
         "php": "^8.1",
         "doctrine/coding-standard": "^12.0",
-        "slevomat/coding-standard": "^8.12",
+        "slevomat/coding-standard": "^8.14",
         "squizlabs/php_codesniffer": "^3.8"
     },
     "require-dev": {

Diff for: phpstan-baseline.neon

@@ -20,11 +20,6 @@ parameters:
 			count: 1
 			path: tests/TestCase.php
 
-		-
-			message: "#^Method Cdn77\\\\TestCase\\:\\:getSniffName\\(\\) should return string but returns string\\|null\\.$#"
-			count: 1
-			path: tests/TestCase.php
-
 		-
 			message: "#^Parameter \\#3 \\.\\.\\.\\$values of function sprintf expects bool\\|float\\|int\\|string\\|null, mixed given\\.$#"
 			count: 1

Diff for: tests/TestCase.php

@@ -19,7 +19,6 @@
 use function define;
 use function defined;
 use function in_array;
-use function preg_replace;
 use function sprintf;
 use function str_replace;
 use function strlen;
@@ -80,23 +79,6 @@ protected static function checkFile(string $filePath, array $sniffProperties = [
         return $file;
     }
 
-    private static function getSniffName(): string
-    {
-        return preg_replace(
-            [
-                '~\\\~',
-                '~\.Sniffs~',
-                '~Sniff$~',
-            ],
-            [
-                '.',
-                '',
-                '',
-            ],
-            static::getSniffClassName(),
-        );
-    }
-
     private static function getSniffClassReflection(): ReflectionClass
     {
         static $reflections = [];