Convert to inline diagnostics in rustc_session

Cargo.lock

@@ -4641,7 +4641,6 @@ dependencies = [
  "rustc_data_structures",
  "rustc_errors",
  "rustc_feature",
- "rustc_fluent_macro",
  "rustc_fs_util",
  "rustc_hashes",
  "rustc_hir",

compiler/rustc_driver_impl/src/lib.rs

@@ -135,7 +135,6 @@ pub static DEFAULT_LOCALE_RESOURCES: &[&str] = &[
     rustc_pattern_analysis::DEFAULT_LOCALE_RESOURCE,
     rustc_privacy::DEFAULT_LOCALE_RESOURCE,
     rustc_resolve::DEFAULT_LOCALE_RESOURCE,
-    rustc_session::DEFAULT_LOCALE_RESOURCE,
     rustc_trait_selection::DEFAULT_LOCALE_RESOURCE,
     rustc_ty_utils::DEFAULT_LOCALE_RESOURCE,
     // tidy-alphabetical-end

compiler/rustc_interface/src/interface.rs

@@ -55,7 +55,7 @@ pub(crate) fn parse_cfg(dcx: DiagCtxtHandle<'_>, cfgs: Vec<String>) -> Cfg {
     cfgs.into_iter()
         .map(|s| {
             let psess = ParseSess::emitter_with_note(
-                vec![rustc_parse::DEFAULT_LOCALE_RESOURCE, rustc_session::DEFAULT_LOCALE_RESOURCE],
+                vec![rustc_parse::DEFAULT_LOCALE_RESOURCE],
                 format!("this occurred on the command line: `--cfg={s}`"),
             );
             let filename = FileName::cfg_spec_source_code(&s);
@@ -127,7 +127,7 @@ pub(crate) fn parse_check_cfg(dcx: DiagCtxtHandle<'_>, specs: Vec<String>) -> Ch
 
     for s in specs {
         let psess = ParseSess::emitter_with_note(
-            vec![rustc_parse::DEFAULT_LOCALE_RESOURCE, rustc_session::DEFAULT_LOCALE_RESOURCE],
+            vec![rustc_parse::DEFAULT_LOCALE_RESOURCE],
             format!("this occurred on the command line: `--check-cfg={s}`"),
         );
         let filename = FileName::cfg_spec_source_code(&s);

compiler/rustc_session/Cargo.toml

@@ -12,7 +12,6 @@ rustc_ast = { path = "../rustc_ast" }
 rustc_data_structures = { path = "../rustc_data_structures" }
 rustc_errors = { path = "../rustc_errors" }
 rustc_feature = { path = "../rustc_feature" }
-rustc_fluent_macro = { path = "../rustc_fluent_macro" }
 rustc_fs_util = { path = "../rustc_fs_util" }
 rustc_hashes = { path = "../rustc_hashes" }
 rustc_hir = { path = "../rustc_hir" }