Removing flake when 2 long-press events happened on single long press

There is some unknown to me logic in Launcher that sometimes duplicates
the long-press event . This causes flakes whenTAPL expects one long
press, but the actual sequence is 2 events.

That duplication logic seems to be related to race conditions is is hard
to repro. For now, just removing long-press verification. I'll start
with more deterministic events.

Bug: 147806932
Change-Id: I03841131bf8cae88011824f660f2c7b1906592f4