Clearing Alignment Guides
                                                        It is possible to instantly remove all alignment guides from your scene.
NOTE It is not possible to delete a single alignment guide and keep all others. 
                                                         How to clear all alignment guides
How to clear all alignment guides
                                                            - Do one of the following:- In the Alignment Guides toolbar, click Clear Alignment Guides. 
- In the top menu, select View > Alignment Guides > Clear Alignment Guides.
 
- In the Alignment Guides toolbar, click