Plugin elements even after uninstalling

Hi Devs,
I’try some days ago your plugin for a problem caused by the template (not from the video or plugins), so removed.
Now (after the uninstall) I’ve many “Medialements.js” items get married in the wp directory.
And this cause some problems with the native media manager.

./wp-content/themes/twentyseventeen/assets/css/editor-style.css:.mejs-container
./wp-content/themes/twentyseventeen/assets/css/editor-style.css:.wp-playlist-dark .mejs-container .mejs-controls
./wp-content/themes/twentyseventeen/style.css:.mejs-container
./wp-content/themes/twentyseventeen/style.css:.site-content .wp-playlist-dark .mejs-container .mejs-controls
./wp-includes/css/media-views.css:.mejs-container video
./wp-includes/css/media-views.css:.mejs-container:focus
./wp-includes/css/media-views.min.css: */.ui-draggable-handle....
./wp-includes/css/media-views-rtl.css:.mejs-container:focus
./wp-includes/css/media-views-rtl.css:.mejs-container video
./wp-includes/js/mediaelement/mediaelementplayer-legacy.min.css:.mejs-offscreen
./wp-includes/js/mediaelement/wp-mediaelement.js:				.not( '.mejs-container
./wp-includes/js/mediaelement/wp-mediaelement.css:.wp-playlist .mejs-container 
./wp-includes/js/mediaelement/wp-mediaelement.css:.mejs-container .mejs-controls
./wp-includes/js/mediaelement/wp-mediaelement.css:.mejs-container
./wp-includes/js/mediaelement/wp-mediaelement.css:.mejs-container
./wp-includes/js/mediaelement/wp-mediaelement.css:.mejs-container
./wp-includes/js/mediaelement/wp-playlist.js:		$( '.wp-playlist:not(:has(.mejs-container))
./wp-includes/js/mediaelement/wp-playlist.min.js:!function(a,b,c){"use strict";function d(){a(".wp-playlist:not(:has(.mejs-container......
./wp-includes/js/mediaelement/wp-mediaelement.min.css:.mejs-container{clear:both;max-width:100%}.mejs-container....
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css:.mejs-container.mejs-hide-cues video::-webkit-media-text-track-container 
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css:.mejs-container-keyboard-inactive a,
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css:.mejs-container-keyboard-inactive a:focus,
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css:.mejs-container-keyboard-inactive button,
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css:.mejs-container-keyboard-inactive button:focus,
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css:.mejs-container-keyboard-inactive [role=slider],
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css:.mejs-container-keyboard-inactive [role=slider]:focus
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css:.mejs-container {
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css:.mejs-container * {
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css:.mejs-container video::-webkit-media-controls,
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css:.mejs-container video::-webkit-media-controls-panel,
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css:.mejs-container video::-webkit-media-controls-panel-container,
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css:.mejs-container video::-webkit-media-controls-start-playback-button {
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css:.mejs-fill-container .mejs-container {
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css:.mejs-container:focus {
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css:.mejs-container-fullscreen {
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css:.mejs-container-fullscreen .mejs-mediaelement,
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css:.mejs-container-fullscreen video
./wp-admin/css/media-rtl.css:.mejs-container {
./wp-includes/js/mediaelement/wp-mediaelement.min.js:!function(a,b){function
./wp-admin/css/media.css:.mejs-container {
./wp-admin/css/media.min.css:.media-item .describe{border-collapse:collapse....
./wp-admin/css/media-rtl.min.css:.media-item .describe{border-collapse:collapse....

and again:

find ./ -iname *mediaelement*
./wp-includes/js/mediaelement
./wp-includes/js/mediaelement/wp-mediaelement.min.js
./wp-includes/js/mediaelement/mediaelementplayer.css
./wp-includes/js/mediaelement/mediaelementplayer-legacy.css
./wp-includes/js/mediaelement/mediaelement-migrate.min.js
./wp-includes/js/mediaelement/mediaelement-migrate.js
./wp-includes/js/mediaelement/mediaelementplayer.min.css
./wp-includes/js/mediaelement/mediaelement.js
./wp-includes/js/mediaelement/mediaelement-and-player.js
./wp-includes/js/mediaelement/mediaelement.min.js
./wp-includes/js/mediaelement/wp-mediaelement.min.css
./wp-includes/js/mediaelement/wp-mediaelement.css
./wp-includes/js/mediaelement/mediaelement-and-player.min.js
./wp-includes/js/mediaelement/wp-mediaelement.js
./wp-includes/js/mediaelement/mediaelementplayer-legacy.min.css

What I could do now?

Many thanks!

Davide

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