nuke findtr script

it's a precursor of lupdate from the stone age.

[ChangeLog][Tools] The obsolete findtr script was removed.

Task-number: QTBUG-30900
Change-Id: Ic3efdc44df084573aec2512d8f86101832253d77
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: hjk <hjk121@nokiamail.com>
Decrease the life time of SpecialData::resolvedFormats

Once LayoutData::items gets cleared, accessing (or re-using)
SpecialData::resolvedFormats may lead to a undefined behavior,
so clear SpecialData::resolvedFormats right after LayoutData::items.

Change-Id: Ib389f0029a0562f5d2837f62f76197510a0db099
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>