tamer: Remove wip-nir-to-air feature flag in favor of existing wip-asg-derived-xmli

The latter has always enabled the former, and there's really no reason I'd
enable one but not the other at this point.  It's just confusing.

DEV-13708

tamer/Cargo.toml

@@ -52,15 +52,9 @@ unicode-width = "0.1.5"
 # This is enabled automatically for the `test` profile.
 parser-trace-stderr = []
 
-# Lowering NIR into AIR will begin adding objects to the graph.  Since
-# loweirng is not complete, this may result in errors.  This flag can be
-# removed when we are able to confidently state that this lowering will not
-# cause issues in production TAME code.
-wip-nir-to-air = []
-
 # Derive `xmli` file from the ASG rather than a XIR token stream.  This
 # proves that enough information has been added to the graph for the entire
 # program to be reconstructed.  The `xmli` file will be a new program
 # _derived from_ the original, and so will not match exactly.
-wip-asg-derived-xmli = ["wip-nir-to-air"]
+wip-asg-derived-xmli = []
 

tamer/src/nir/air.rs

@@ -26,7 +26,7 @@ use crate::{
 use std::{error::Error, fmt::Display};
 
 // These are also used by the `test` module which imports `super`.
-#[cfg(feature = "wip-nir-to-air")]
+#[cfg(feature = "wip-asg-derived-xmli")]
 use crate::{
     asg::ExprOp,
     nir::{Nir::*, NirEntity::*},
@@ -56,7 +56,7 @@ impl ParseState for NirToAir {
     type Error = NirToAirError;
     type Context = QueuedObj;
 
-    #[cfg(not(feature = "wip-nir-to-air"))]
+    #[cfg(not(feature = "wip-asg-derived-xmli"))]
     fn parse_token(
         self,
         tok: Self::Token,
@@ -68,7 +68,7 @@ impl ParseState for NirToAir {
         Transition(Ready).ok(Air::Todo(UNKNOWN_SPAN))
     }
 
-    #[cfg(feature = "wip-nir-to-air")]
+    #[cfg(feature = "wip-asg-derived-xmli")]
     fn parse_token(
         self,
         tok: Self::Token,
@@ -210,5 +210,5 @@ impl Diagnostic for NirToAirError {
     }
 }
 
-#[cfg(all(test, feature = "wip-nir-to-air"))]
+#[cfg(all(test, feature = "wip-asg-derived-xmli"))]
 mod test;