Remove invalid texture filtering test cases

Remove invalid texture filtering test cases

Remove the 3D texture filtering test cases that use YCbCr conversion
formats. Specification states that VK_IMAGE_TYPE_2D must be used
for formats that require a sampler YCbCr conversion.

Removed tests:
dEQP-VK.texture.filtering.3d.formats.r10x6g10x6b10x6a10x6_unorm.*

VK-GL-CTS Issue: 3646

Components: Vulkan

Change-Id: I31646db161da2f3d19d3f556b7bd39be6d261442