tamer: Remove wip-frontends feature flag

We want the new system to be used so that we can start catching any problems
that may arise.  Further changes will be flagged as necessary.

DEV-10936

tamer/Cargo.toml

@@ -46,9 +46,4 @@ unicode-width = "0.1.5"
 # or another.  Once WIP features are finalized, they are enabled by default
 # and the flag removed.
 [features]
-# Process source files using available frontends rather than copying
-# the files verbatim to XMLI files.  This begins the process of moving
-# compilation from XSLT into TAMER, and so the XSLT-based compiler must be
-# expecting it so that it can skip those compilation steps.
-wip-frontends = []
 

tamer/src/bin/tamec.rs

@@ -62,13 +62,6 @@ pub fn main() -> Result<(), TamecError> {
 
             let dest = Path::new(&output);
 
-            #[cfg(not(feature = "wip-frontends"))]
-            {
-                fs::copy(source, dest)?;
-                Ok(())
-            }
-
-            #[cfg(feature = "wip-frontends")]
             Ok(())
                 .and_then(|_| {
                     use std::io::{BufReader, BufWriter};