Bug 487303 - [Search] Remove "Classic Search" view

Get rid of internal classes part of "old" search.

Change-Id: Ie29c65d7da6667aec9d57e29ea9b246040e6a3dd
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.text/+/186121
Tested-by: Platform Bot <platform-bot@eclipse.org>
Reviewed-by: Alexander Kurtakov <akurtako@redhat.com>
25 files changed