[FIX] web_editor: clear format button always visible

This commit makes the clear button of the toolbar always visible
even if no style is applied.

Since the display is controlled by the css, we removed the concerned
style.

Task-3459819

closes odoo/odoo#134098

X-original-commit: 0f916d4b
Signed-off-by: David Monjoie (dmo) <dmo@odoo.com>

addons/web_editor/static/src/scss/wysiwyg.scss

@@ -321,9 +321,6 @@ $o-we-zindex: $o-we-overlay-zindex + 1 !default;
     // Specific elements
     #decoration {
         #removeFormat {
-            display: none;
-        }
-        .active ~ #removeFormat {
             display: flex;
         }
     }