Remove SkQP from all required test suites.

Since its inception many of SkQP test cases have been covered
by deQP and other CTS packages. SkQP has begun to lag behind the
most recent versions of Skia and offers diminishing value until
it can be brought to parity with Skia's current testing capabilities.

Test: make
Bug: 177909514
Change-Id: I2cf968f0fc7b3e2ceff5cd7bd134974ecb776f3f
1 file changed