[Php81] Remove cast check on NullToStrictStringFuncCallArgRector (#4320)

rules/Php81/Rector/FuncCall/NullToStrictStringFuncCallArgRector.php

@@ -7,7 +7,6 @@
 use PhpParser\Node;
 use PhpParser\Node\Arg;
 use PhpParser\Node\Expr;
-use PhpParser\Node\Expr\Assign;
 use PhpParser\Node\Expr\Cast\String_ as CastString_;
 use PhpParser\Node\Expr\ConstFetch;
 use PhpParser\Node\Expr\FuncCall;
@@ -486,10 +485,6 @@ private function processNullToStrictStringOnNodePosition(
             return null;
         }
 
-        if ($this->isCastedReassign($argValue)) {
-            return null;
-        }
-
         $args[$position]->value = new CastString_($argValue);
         $funcCall->args = $args;
 
@@ -517,21 +512,6 @@ private function shouldSkipTrait(Expr $expr, Type $type, bool $isTrait): bool
         return true;
     }
 
-    private function isCastedReassign(Expr $expr): bool
-    {
-        return (bool) $this->betterNodeFinder->findFirstPrevious($expr, function (Node $subNode) use ($expr): bool {
-            if (! $subNode instanceof Assign) {
-                return false;
-            }
-
-            if (! $this->nodeComparator->areNodesEqual($subNode->var, $expr)) {
-                return false;
-            }
-
-            return $subNode->expr instanceof CastString_;
-        });
-    }
-
     private function isAnErrorTypeFromParentScope(Expr $expr, Scope $scope): bool
     {
         $parentScope = $scope->getParentScope();