Remove half-baked non-sized array support ANGLE used to accept shaders with non-sized arrays in initializer lists. Fix this. Proper support for implicitly sized arrays will be implemented later for ESSL3. TEST=angle_unittests BUG=angleproject:941 Change-Id: I53c5ccf0f7ef09ad30e142f8350812959fc4846c Reviewed-on: https://chromium-review.googlesource.com/264360 Tested-by: Olli Etuaho <oetuaho@nvidia.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>