Remove useless PHP_VERSION_ID checks for PHP 8.1

Author: JanTvrdik

src/UsedSymbolExtractor.php

@@ -11,7 +11,6 @@
 use function strlen;
 use function strtolower;
 use function substr;
-use const PHP_VERSION_ID;
 use const T_AS;
 use const T_ATTRIBUTE;
 use const T_CLASS;
@@ -91,7 +90,7 @@ public function parseUsedSymbols(
                 case T_CLASS:
                 case T_INTERFACE:
                 case T_TRAIT:
-                case PHP_VERSION_ID >= 80_100 ? T_ENUM : -1:
+                case T_ENUM:
                     $inClassLevel = $level + 1;
                     break;
 
@@ -349,7 +348,7 @@ private function canBeSymbolName(
             || $tokenBeforeName->id === T_CLASS
             || $tokenBeforeName->id === T_INTERFACE
             || $tokenBeforeName->id === T_TRAIT
-            || $tokenBeforeName->id === (PHP_VERSION_ID >= 80_100 ? T_ENUM : -1)
+            || $tokenBeforeName->id === T_ENUM
             || $tokenBeforeName->id === T_NULLSAFE_OBJECT_OPERATOR
             || $tokenAfterName->id === T_INSTEADOF
             || $tokenAfterName->id === T_AS

tests/UsedSymbolExtractorTest.php

@@ -6,7 +6,7 @@
 use PHPUnit\Framework\TestCase;
 use function file_get_contents;
 use function strtolower;
-use const PHP_VERSION_ID; // only needed for PHP 8.1+ (enum) and 8.4+ (property hooks) checks
+use const PHP_VERSION_ID;
 
 class UsedSymbolExtractorTest extends TestCase
 {