fix: Drop workarounds that were resolved since Nextcloud 27

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

css/forms.css

@@ -26,21 +26,3 @@
 html {
 	scroll-padding-top: calc(var(--header-height) + 60px);
 }
-
-/* Fix for placeholder styling
- * TODO: Can be removed, as soon as it is fixed in server
- * Ref.: https://github.com/nextcloud/server/pull/37522
- */
-::placeholder {
-	color: var(--color-text-maxcontrast);
-	font-size: var(--default-font-size);
-}
-
-/* Fix for action-popover alignment
- * TODO: Can be removed, as soon as the issue is solved in server or vue-components.
- * Ref.: https://github.com/nextcloud/nextcloud-vue/issues/1384
- */
-body {
-	min-height: 100%;
-	height: auto;
-}