linker: Rely on _mesa_clear_shader_program_data to clear link information

_mesa_link_shader_program already calls _mesa_clear_shader_program_data
before calling link_shaders, so this is already done.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
4 files changed