Avoid collecting tests then running for CtsMediaBitStream

CtsmediaBitStream internally call AndroidJUnitTest so there
is no need for re-run or doing collect then run.
Disable re-run for faster run.

Test: ./cts-tradefed run cts-suite --skip-preconditions -m
CtsMediaBitstreamsTestCases
Bug: 37211399

Change-Id: Icd204a04417b26d95d7a82c426e24c00f5f8a02c
1 file changed