Remove opt mode tests
Remove opt mode tests

User can specify ASYLO_EXTRA_BAZEL_FLAGS="build -c opt" to run tests in
opt mode.

PiperOrigin-RevId: 272029217
Change-Id: Ibe9a239bbddb3ebb18fa02df29b83549592fc7b5

google/asylo,google/asylo,google/asylo,google/asylo,google/asylo,google/asylo