The map is output in the page template. A search of Github for the term skt_moveMap() (which seemed like a unique function name) revealed that the Google Maps code from your question is part of the “Contact page Template with Sidebar” (template-contact-with-sidebar.php) or “Contact page Template” (template-contact-page.php) templates included in themes from SketchThemes.
Looking at this template I could see that the map position was determined by the theme’s settings, and I was able to find where those were simply by going to the theme author’s website, going to their documentation, and selecting one of the theme’s I’d found. That documentation clearly shows where these settings are.
Checking your plugin or theme’s support resources should always be the first place to look.