I found in this Launchpad bug https://bugs.launchpad.net/kdelibs/+bug/354617 that With the unchecked "Limit to maximum size" in the Trash settings, moving to trash is instant.
I found in this Launchpad bug https:/ /bugs.launchpad .net/kdelibs/ +bug/354617 that With the unchecked "Limit to maximum size" in the Trash settings, moving to trash is instant.