vulkan: drop shader modules once their pipeline is built

Nothing reads a pipeline's shader modules after the pipeline exists, and
the driver keeps a copy of each module's SPIR-V for as long as it lives:
title 1 keeps ~1,500 graphics pipelines with 2-5 modules each. The
graphics pipeline picks its configure function before queuing the build,
which now frees what it looks at.

(cherry picked from commit aaa414ec1dd96e466282b0c4501574cbe7c2494e)

0 files changed, 0 insertions, 0 deletions