Remove concept of 'completion' from the projection cache

Fixes #88910

When we initially store a `NormalizedTy` in the projection cache,
we discard all obligations that we can (while ensuring that we
don't cause any issues with incremental compilation).

Marking a projection cache entry as 'completed' discards all
obligations associated with it. This can only cause problems,
since any obligations stored in the cache are there for a reason
(e.g. they evaluate to `EvaluatedToOkModuloRegions`).

This commit removes `complete` and `complete_normalized` entirely.

0 files changed, 0 insertions, 0 deletions