hallucination fix

Author: Vitexus

src/SpojeNet/Cnb/ExchangeRate.php

@@ -111,7 +111,7 @@ public function storeDay(int $dayBack = 0): void {
     }
 
     public function dropOlder(int $days): void {
-        if($this->dropFromSQL(['date' => ['<' => self::dateBeforeDays($days)]]) > 0){
+        if($this->deleteFromSQL(['date' => ['<' => self::dateBeforeDays($days)]]) > 0){
             $this->addStatusMessage(sprintf(_('Dropped rates older than %d days'), $days), 'success');
         }
     }