remove jslicense, we're not librejs compatible any more

Author: silverwind

templates/base/footer_content.tmpl

@@ -16,7 +16,7 @@
 					{{end}}
 				</div>
 			</div>
-			<a href="{{StaticUrlPrefix}}/js/licenses.txt" data-jslicense="1">JS licenses</a>
+			<a href="{{StaticUrlPrefix}}/js/licenses.txt">JS licenses</a>
 			{{if .EnableSwagger}}<a href="{{AppSubUrl}}/api/swagger">API</a>{{end}}
 			<a target="_blank" rel="noopener noreferrer" href="https://gitea.io">{{.i18n.Tr "website"}}</a>
 			{{template "custom/extra_links_footer" .}}