Revert "FiberScope - attempt to fix asking for types on mutated scope"

This reverts commit f180591.

Author: ondrejmirtes

src/Analyser/Fiber/FiberScope.php

@@ -123,14 +123,6 @@ public function filterByFalseyValue(Expr $expr): self
 
 	private function preprocessScope(MutatingScope $scope): Scope
 	{
-		if ($scope->getAnonymousFunctionReflection() !== $this->getAnonymousFunctionReflection()) {
-			return $this->toMutatingScope();
-		}
-
-		if ($scope->getFunction() !== $this->getFunction()) {
-			return $this->toMutatingScope();
-		}
-
 		if ($this->nativeTypesPromoted) {
 			$scope = $scope->doNotTreatPhpDocTypesAsCertain();
 		}