remove obsolete line that's no longer used because $seed is computed elsewhere

Author: eli-darkly

src/LaunchDarkly/Impl/Model/FeatureFlag.php

@@ -220,7 +220,6 @@ private function getOffValue(EvaluationReason $reason): EvaluationDetail
  private function getValueForVariationOrRollout(VariationOrRollout $r, LDUser $user, EvaluationReason $reason): EvaluationDetail
  {
  $rollout = $r->getRollout();
- $seed = is_null($rollout) ? null : $rollout->getSeed();
  list($index, $inExperiment) = $r->variationIndexForUser($user, $this->_key, $this->_salt);
  if ($index === null) {
  return new EvaluationDetail(null, null, EvaluationReason::error(EvaluationReason::MALFORMED_FLAG_ERROR));