Revert "libbinder_ndk_unit_test: shutdown wait time to 20s"

This reverts commit 48abe6a88d407f662ca32bba9a4fd496a116586d.

Reason for revert: not the issue, see b/285202885

Change-Id: I876e73d3ff06dc657d91f7944bc0b81079e67700
1 file changed