DO NOT MERGE: Remove test3 data

testing/data/test3/output_data test data files were included in error
in a previous commit (change id I6bdcde453b32965649537aea15f3b6e1b3cfd653).
when cherry-picking files from master. This commit removes the extra files.

Test: None
Bug: 137178696
Merged-In: Ib769bf654b3927a902bfcce066aebd881a55643f
Merged-In: I7aad69f95eb0d704aa76fafcd18bfabf73436963
Change-Id: Ib769bf654b3927a902bfcce066aebd881a55643f
(cherry picked from commit a67529a5febf1b1972683064cdf16bcd462e2e97)
(cherry picked from commit c0fbf473f6d9c981a6c5530279bce5c31a86db1b)
3 files changed