The image was correctly switched out with a version of the logo which was on Wikimedia Commons our media repository We do not need duplicate copies of images or logos so the version that you uploaded was deleted Because your version was marked as nonfree the easiest way to process was to deleted it as an orphaned nonfree image although it could have been just as easily speedy deleted as a duplicate image This is the reason for the notice on your talk page so that you would be aware of the pending deletion and could resolve any issues As a side note none of your contributions have been eliminated rather all that happened was a differentlynamed logo was swapped out If you have any further questions or issues feel free to bring it to my talk page and I will be happy to work with you  Cheers