Remove extra min call

No need to protect against large values of 2 ** $attempt.

src/FileMutex.php

@@ -60,8 +60,7 @@ public function acquire(?Cancellation $cancellation = null): Lock
                     }
 
                     // Windows fails to open the file if a lock is held.
-                    $multiplier = 2 ** \min(7, $attempt);
-                    delay(\min(self::DELAY_LIMIT, self::LATENCY_TIMEOUT * $multiplier), cancellation: $cancellation);
+                    delay(\min(self::DELAY_LIMIT, self::LATENCY_TIMEOUT * (2 ** $attempt)), cancellation: $cancellation);
                 }
             }
         } catch (FilesystemException|StreamException $exception) {

src/Internal/functions.php

@@ -52,8 +52,7 @@ function lock(string $path, $handle, LockMode $mode, ?Cancellation $cancellation
             );
         }
 
-        $multiplier = 2 ** \min(7, $attempt);
-        delay(\min($delayLimit, $latencyTimeout * $multiplier), cancellation: $cancellation);
+        delay(\min($delayLimit, $latencyTimeout * (2 ** $attempt)), cancellation: $cancellation);
     }
 }