Issue #2407955 by dernetzjaeger, darketaine, stefan.r, ChuChuNaKu, ironkiat,...

Issue #2407955 by dernetzjaeger, darketaine, stefan.r, ChuChuNaKu, ironkiat, LewisNyman, Cottser, wellme, mgifford, emma.maria: Clean up unused images in the Seven theme

core/themes/seven/css/components/form.css

@@ -91,7 +91,6 @@ label[for] {
   background-color: #fcf4f2;
 }
 .form-required:after {
-  background-image: url(../../images/required.svg);
   background-size: 7px 7px;
   width: 7px;
   height: 7px;

core/themes/seven/images/required.svg

-<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16"><path fill="#e62600" d="M0,7.562l1.114-3.438c2.565,0.906,4.43,1.688,5.59,2.35C6.398,3.553,6.237,1.544,6.22,0.447h3.511 c-0.05,1.597-0.234,3.6-0.558,6.003c1.664-0.838,3.566-1.613,5.714-2.325L16,7.562c-2.05,0.678-4.06,1.131-6.028,1.356 c0.984,0.856,2.372,2.381,4.166,4.575l-2.906,2.059c-0.935-1.274-2.041-3.009-3.316-5.206c-1.194,2.275-2.244,4.013-3.147,5.206 l-2.856-2.059c1.872-2.307,3.211-3.832,4.017-4.575C3.849,8.516,1.872,8.062,0,7.562"/></svg>