Remove "Test" prefix from test function names
Remove "Test" prefix from test function names

There's no need to prefix every test function with "Test" because all
the tests are alredy labeled with googletest macros.

PiperOrigin-RevId: 274906532
Change-Id: If4debc55a05c52ad6eeea0310378c3c9d8f21be1

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