[Piglit] Remove remaing Glean tests.

[Fabian Bieler]

This series removes the remaing Glean tests from Piglit.

3 subtests were cherry-picked and ported to Piglit.

These test were removed without replacement:
api2        no real value
vertattrib  GL_NV_vertex_program not supported by mesa (anymore)
makeCurrent glX api n/a to piglit

Locations for the replacing Piglit tests ('*' indicates new tests):
fbo:
fbo/fbo-1d.c, fbo-3d.c, fbo/fbo-cubemap.c, fbo/fbo-drawbuffers-maxtargets.c, fbo/fbo-depthtex.c, spec/ext_framebuffer_object/mipmap.c*, fbo/fbo-incomplete.cpp, spec/ext_framebuffer_object/error-handling.c*

fragProg1:
shaders/fp-*, spec/arb_fragment_program/*

pixelFormats:
texturing/texture-packed-formats.c

shaderAPI:
shaders/getuniform-0[23].c, general/getactiveattrib.c, shaders/glsl-uniform-out-of-bounds*.c, shaders/getuniform-0?.c, spec/gl-2.0/api/uniform-neg-location.c*, shaders/glsl-fs-uniform-bool-?.shader_test

texCube:
texturing/cubemap.c

texture_srgb:
texturing/tex-srgb.c

vertArrayBGRA:
general/bgra-sec-color-pointer.c, general/bgra-vert-attrib-pointer.c

See also:
https://bugs.freedesktop.org/show_bug.cgi?id=65676
https://bugs.freedesktop.org/attachment.cgi?id=107443