Delete files by extension in laravel 5.5

According to Laravel's official documentation, yes.

In English: Deleting files

In Spanish (this part is not yet translated): Deleting files

From the original documentation:

  

Deleting Files

     

The delete method accepts a single filename or an array of files to   remove from the disk:

use Illuminate\Support\Facades\Storage;

Storage::delete('file.jpg');

Storage::delete(['file1.jpg', 'file2.jpg']);

     

If necessary, you may specify the disk that the file should be deleted   from:

use Illuminate\Support\Facades\Storage;

Storage::disk('s3')->delete('folder_path/file_name.jpg');

But to delete ALL the files with a certain suffix you have to do the following:
* Thanks to the Pikoh's comment

File::delete(File::glob('path/*.jpg'));