Use less SnapshotInputStreamSource

Replace `new SnapshotInputStreamSource(new FileInputStream(s))` with
`new FileInputStream(s)`.

Replace `new SnapshotInputStreamSource(new ByteArrayInputStream(s))`
with `new ByteArrayInputStreamSource(s)`

Bug: 36397380
Test: Build and run TF unit tests.
Change-Id: If9ac9908539f6d1b1ede26fd2b0e759a2f92e845
28 files changed