[TASK] EM: Remove search form in showAllVersions

The search form is necessary on TER list but displayed in
showAllVerions. The search form is removed with this patch.

Change-Id: Ic9a6fcd33418209ba0d5def357c5b722051b31c4
Fixes: #46942
Releases: 6.0, 6.1
Reviewed-on: https://review.typo3.org/19592
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn