Fix PHPMD

Problem/Motivation

FILE: /project/app/modules/custom/syslog_watcher/src/Controller/SyslogWatcherController.php
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 108 | VIOLATION | Missing class import via use statement (line '108', column '19').
 261 | VIOLATION | Missing class import via use statement (line '261', column '19').

Found 2 violations and 0 errors in 241ms