CTS: Suppress -Wunused-parameter

Suppress unused-parameter warnings to lower build-time spam.

Bug: 18632512
Test: mmma cts
Change-Id: I2af0a9b0009e91415f87a397611d716567fbb16b
1 file changed
tree: bc8eb3df14c02b275299b22a2da10e92b240dab7
  1. tests/