Laravel delete with jQuery data model issue

Question

I'm using jQuery modal box for delete function. But I'm getting this error when clicking yes button on modal box

Failed to load resource: the server responded with a status of 405 (Method Not Allowed)

Here is my view which I load the data modal popup

<a data-toggle='modal' 
   data-target='#delete-user-warning-data-{{ $company1->id}}' href="{{url('delete-warning', $company1->id)}}">
    {!! Form::open(['method' => 'DELETE', 'route' => ['delete-warning', $company1->id],'class' => 'form-del']) !!}
    <button type="button" class="btn btn-dadnger" aria-label="Center Align" data-toggle="modal">
        <i class="fa fa-trash-o"></i>
    </button>
    {{--<button type="submit" id="del" class="btn"--}}
    {{--onclick="return confirm('Are you sure you want to permnently delete the license code? If the code is  currently being used by a book, it will be in in-accessible until the  user entries a new code.')">--}}
    {{--<span class="glyphicon glyphicon-minus-sign"></span>--}}
    {{--</button>--}}
    {!! Form::close() !!}
</a>

<!-- DELETE -->
<div class="modal fade" id="delete-user-warning-data-{{ $company1->id}}" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
    <div class="modal-dialog modal-sm">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                    <span aria-hidden="true">&times;</span>
                </button>
                <h4 class="modal-title text-center" id="myModalLabel">Are you sure you want to delete ?</h4>
            </div>
            <div class="modal-body">
                <p class="center-block text-center">{{ $company1->id}}</p>
                <div class="prompt-center-area">
                    <button type="button" class="btn btn-default" data-dismiss="modal" ng-click="closeModel();">No</button>
                    <button type="submit" class="btn btn-primary" >Yes</button>
                </div>
            </div>
            <div class="modal-footer"></div>
        </div>
    </div>
</div>

This is the route

Route::delete('delete-warning/{id}', ['as'    => 'delete-warning', 'uses'  => 'CodesController@destroy']);

and this is my controller for delete function

public function destroy($id)
{
    try{
          $Code = Codes::findOrFail($id);

    $Code->delete();
        return redirect()->back();
    }catch(\Exception $e){

        return redirect()->back();
    }
}

Please advice me how fix this issue