egl: remove left over _EGLMain_t

Fixes: b174a1ae720cb404738c "egl: Simplify the "driver" interface"
Cc: Adam Jackson <ajax@redhat.com>
Signed-off-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
1 file changed