The ornamental design for a bankrobbertrap, as shown and described.
FIG. 1 is a left, rear perspective view of a bank robber trap showing my
new design; the broken line showing of the wall is for illustrative
purposes only and forms no part of the claimed design;
FIG. 2 is a top view thereof;
FIG. 3 is a front elevation view thereof; and,
FIG. 4 is a rear elevation view thereof, showing doors unlocked, and with
manual latch lock in locked position.