[Q] XT1032 (US/GB Retail) 5.0.2 Locked bootloader - need temporary root

I have US and GB Retail 1st gens (XT1032), both updated to 5.0.2. Need to delete stale timezone file /data/misc/zoneinfo/tzdata, but don't have access to it. Don't want to unlock bootloader or any how wipe the device. Don't need permanent root or any other modifications to system partitions - just delete this single file.

There we some Android exploits recently, maybe there are some tools already?