Removed mention of image in footer.

Author: golkar

_config.yml

@@ -546,7 +546,7 @@ contact-description: Let's pioneer the future of science together. Contact us to
 #####################################
 #############   Footer   ############
 #####################################
-footer-description: © 2023 Polymathic AI. All rights reserved.<br>Photo by Hulki Okan Tabak via Unsplash.
+footer-description: © 2023 Polymathic AI. All rights reserved.
 # SG: removed the following from footer section
 # footer-copyright-text: Ohkimur
 # footer-copyright-url: https://github.com/ohkimur