web_renderjs_ui: Don't include <span> in translated message

This tab was probably useless, let's remove it.
3 jobs for feat/login_page_translations in 0 seconds
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-TestRunner1

00:58:03

passed ERP5.PerformanceTest-TestRunner1

00:30:41

passed ERP5.UnitTest-TestRunner1

01:49:17