ci/virgl: Fix GLES31 testing on desktop GL.
The version overrides leaked into the virglrenderer server, breaking compiling of all sorts of shaders. We already get GLES3.1 when running virgl on llvmpipe GL without doing any overrides.
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
The version overrides leaked into the virglrenderer server, breaking compiling of all sorts of shaders. We already get GLES3.1 when running virgl on llvmpipe GL without doing any overrides.