[Intel-gfx] [PATCH i-g-t] igt/gem_tiled_fence_blits: Remove libdrm_intel dependence

[Chris Wilson]

Quoting Chris Wilson (2018-07-23 12:29:47)
> Modernise the test to use igt's ioctl library as opposed to the
> antiquated libdrm_intel.

There is no value in this test, as it is simply a derivative of
gem_tiled_blits.c.
-Chris