FIX Remove MESA_FORMAT_R1G5B5A5_UNORM MESA_FORMAT_A5B5G5R1_UNORM...

... MESA_FORMAT_A10B10G10R2_UNORM MESA_FORMAT_R2G10B10A10_UNORM

These mesa formats are not allowed GL formats by the specs.

Squash this commit with the one adding them.

Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
mesa_: don't allow GL_ABGR_EXT and 5_5_5_1 and 10_10_10_2 types

GL_UNSIGNED_SHORT_5_5_5_1, GL_UNSIGNED_SHORT_1_5_5_5_REV,
GL_UNSIGNED_INT_10_10_10_2, GL_UNSIGNED_INT_2_10_10_10_REV types are not
allowed to work with GL_ABGR_EXT format as it is not explicitly allowed
in GL and GL_EXT_abgr specs.

Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>