[FIX] web_editor: remove useless code breaking the editor scrolling

Since the editor panel is placed on the right, the content was not
possible to scroll when in a iframe, like for mass mailing. This was
because of some strange code introduced with [1]. As the problem the
mentioned commit says fixing is still fixed without that code, I see
no reason to keep this... especially since it may introduce difference
between readonly and editmode content.

[1]: https://github.com/odoo/odoo/commit/f9bf408a827fa86323bc2d1891cb5173b4781e7b

closes odoo/odoo#59927

X-original-commit: 58ade8c0e17be14fb5bf9cef592c9b9225d21b6d
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>

addons/web_editor/static/src/scss/wysiwyg_iframe.scss

@@ -20,12 +20,4 @@ body.o_in_iframe {
     .note-statusbar {
         display: none;
     }
-
-    #wrapwrap {
-        position: relative;
-        display: table;
-        table-layout: fixed;
-        width: 100%;
-        height: 100%;
-    }
-}
+}