优化维修导入

app/Imports/ParkingSpaceRepairImport.php

@@ -61,7 +61,7 @@ class ParkingSpaceRepairImport implements ToModel, WithChunkReading
             $this->error[] = imports_error($this->index, 'import31');
             return;
         }
-        if (empty(!$end_times)) {
+        if (!$end_times) {
             $this->error[] = imports_error($this->index, 'import32');
             return;
         }