Remove suppress warning in official build.

Change-Id: I62f292df21176302b41a0e69afefbf752155c8e0
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.ui/+/180413
Tested-by: Platform Bot <platform-bot@eclipse.org>