[FIX] theme_clean: remove the content class from the Carousel rows

In [1], in master, the `content` class is removed from the elements
with the `row` class in the Carousel snippet. This commit does the same
for the extension of Carousel in the "Clean" theme, to be consistent
with these changes.

[1]: https://github.com/odoo/odoo/pull/102696

task-3011192

closes odoo/design-themes#624

X-original-commit: 3091c1dee2
Related: odoo/odoo#108560
Signed-off-by: Vray Benjamin (bvr) <bvr@odoo.com>

theme_clean/views/snippets/s_carousel.xml

@@ -3,6 +3,9 @@
 
 <template id="s_carousel" inherit_id="website.s_carousel">
     <!-- Container -->
+    <!-- TODO in master: remove the `content` classes in the div with the
+        class `row`, to avoid having unwanted dropzones when dragging inner
+        content. -->
     <xpath expr="//div[hasclass('carousel-inner')]" position="replace">
         <div class="carousel-inner">
             <!-- Slide 1 -->