Remove some problematic texture_functions tests

Remove some problematic texture_functions tests

Some of the tests in dEQP-GLES3.functional.shaders.texture_functions
are overly sensitive to rounding modes and precision of the CPU
reference implementation. For this reason they were removed from
AOSP. This change removes them from mustpass to match.

VK-GL-CTS issue: 1146
Components: OpenGL

Affects:
dEQP-GLES3.functional.shaders.texture_functions.texturelodoffset.usampler2darray_vertex
dEQP-GLES3.functional.shaders.texture_functions.textureprojlodoffset.isampler3d_vertex
dEQP-GLES3.functional.shaders.texture_functions.textureprojoffset.sampler3d_bias_fixed_fragment
dEQP-GLES3.functional.shaders.texture_functions.textureprojoffset.sampler3d_bias_float_fragment
dEQP-GLES3.functional.shaders.texture_functions.textureprojoffset.isampler3d_bias_fragment
dEQP-GLES3.functional.shaders.texture_functions.textureprojoffset.usampler3d_bias_fragment

Change-Id: Id6bfc025a350deb0914d27151e0bae88b42710b6