[BUGFIX] Remove dead code

Classes/Filter/QueryStringFilter.php

@@ -38,8 +38,6 @@ class QueryStringFilter implements FilterInterface {
 	public function __construct(array $filterValues, array $filterConfig) {
 		$this->filterValues = $filterValues;
 		$this->filterConfig = $filterConfig;
-
-//		$this->applyDefaultFilterValues();
 	}
 
 	/**
@@ -70,14 +68,4 @@ class QueryStringFilter implements FilterInterface {
 	public function setFilterValues(array $filterValues): void {
 		$this->filterValues = $filterValues;
 	}
-
-	protected function applyDefaultFilterValues(): void {
-		if (isset($this->filterConfig['defaultValues']) && !empty($this->filterConfig['defaultValues'])) {
-			foreach ($this->filterConfig['defaultValues'] as $key => $value) {
-				if (!isset($this->filterValues[$key])) {
-					$this->filterValues[$key] = $value;
-				}
-			}
-		}
-	}
 }