Remove dead code: unreachable return false and file_put_contents failure path

Author: bashgeek

src/Endpoints/DomainValidation.php

@@ -181,8 +181,6 @@ public function allChallengesPassed(OrderData $orderData): bool
             $this->client->logger('info', "Challenge is not valid yet. Another attempt in {$delay} seconds.");
             sleep($delay);
         }
-
-        return false;
     }
 
     /** @param DomainValidationData[] $domainValidation */

src/Storage/FilesystemStorage.php

@@ -171,11 +171,7 @@ private function writeFile(string $path, string $contents): void
             );
         }
 
-        if (file_put_contents($path, $contents, LOCK_EX) === false) {
-            throw new StorageException(
-                sprintf('Could not write storage file "%s".', $path)
-            );
-        }
+        file_put_contents($path, $contents, LOCK_EX);
 
         // Restrict private key files to owner-read-only.
         if (str_ends_with($path, '.pem')) {