Remove references to now-empty expectation files.

Bug: 38024703
Test: cts -m CtsLibcoreTestCases
Test: cts -m CtsLibcoreJsr166TestCases
Test: cts -m CtsLibcoreOkHttpTestCases
Test: cts -m CtsLibcoreOjTestCases
Test: cts -m CtsLibcoreWycheproofTestCases
Change-Id: I75ce62f00e313780ffe6e169d0989e5fc47875c2
Merged-In: I9be7bad0f3af851ef5b3878d74cdcb07eb9cf1b6
10 files changed