[CLEANUP] Update UserDisplayController.php based on feedback from Spooner

extensions/karma/Classes/Controller/UserDisplayController.php

@@ -50,7 +50,6 @@ class UserDisplayController extends AbstractController
 
             $sourceTotals = [];
             foreach ($this->getKarmaSourceCodes() as $sourceCode) {
-                $value = $this->karmaService->getImmutableKarmaSourceTotalForUser($sourceCode, $frontendUser);
                 $sourceTotals[$sourceCode] = $this->karmaService->getImmutableKarmaSourceTotalForUser($sourceCode, $frontendUser);
             }