Remove unused compareViolationsIgnoreLineNumber method

https://claude.ai/code/session_01DPotRHDJzXnmPGPoCVp8Rn

Author: claude

src/Rules/Violations.php

@@ -141,21 +141,6 @@ public static function compareViolations(Violation $a, Violation $b): int
         ];
     }
 
-    /**
-     * Comparison method that only checks the namespace and error but ignores the line number.
-     */
-    public static function compareViolationsIgnoreLineNumber(Violation $a, Violation $b): int
-    {
-        if (
-            $a->getFqcn() === $b->getFqcn()
-            && self::extractViolationKey($a->getError()) === self::extractViolationKey($b->getError())
-        ) {
-            return 0;
-        }
-
-        return self::compareViolations($a, $b);
-    }
-
     /**
      * Extracts the stable violation-specific part from an error message.
      *