refactor: Remove preloader

src/misc/icons/preloaders/License.txt

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-You are encouraged and legally entitled to copy and modify any animated GIF and APNG images, generated by http://preloaders.net web-site.
-All animated GIF and APNG images are completely free to use in all projects (web and desktop applications, freeware and commercial projects)
-You are encouraged, but NOT obligated to place any reference to http://preloaders.net web-site to use it`s content in any projects and applications, WITH THE EXCEPTION of any other animated images generator applications, which must indicate the source of the used image with a visible link to Preloaders.net web-site on one or more pages that is/are linked to from the main page of the web-site that uses the image from Preloaders.net web-application
-Preloaders.net project reserves the right to refuse service to anyone without any explanation and/or notification
-When using animations from "Social bookmarks" category you agree to terms of use and privacy policy of a particular logo provided by it`s owner

src/misc/icons/preloaders/Preloaders.net.url

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-[InternetShortcut]
-URL=http://preloaders.net/