Remove old error emitter

This completes the transition to annotate-snippets

Author: bjorn3

Cargo.lock

@@ -3901,7 +3901,6 @@ dependencies = [
  "rustc_fluent_macro",
  "rustc_hashes",
  "rustc_index",
- "rustc_lexer",
  "rustc_lint_defs",
  "rustc_macros",
  "rustc_serialize",

compiler/rustc_driver_impl/src/lib.rs

@@ -1481,10 +1481,11 @@ fn report_ice(
     using_internal_features: &AtomicBool,
 ) {
     let translator = default_translator();
-    let emitter = Box::new(rustc_errors::emitter::HumanEmitter::new(
-        stderr_destination(rustc_errors::ColorConfig::Auto),
-        translator,
-    ));
+    let emitter =
+        Box::new(rustc_errors::annotate_snippet_emitter_writer::AnnotateSnippetEmitter::new(
+            stderr_destination(rustc_errors::ColorConfig::Auto),
+            translator,
+        ));
     let dcx = rustc_errors::DiagCtxt::new(emitter);
     let dcx = dcx.handle();
 

compiler/rustc_errors/Cargo.toml

@@ -17,7 +17,6 @@ rustc_error_messages = { path = "../rustc_error_messages" }
 rustc_fluent_macro = { path = "../rustc_fluent_macro" }
 rustc_hashes = { path = "../rustc_hashes" }
 rustc_index = { path = "../rustc_index" }
-rustc_lexer = { path = "../rustc_lexer" }
 rustc_lint_defs = { path = "../rustc_lint_defs" }
 rustc_macros = { path = "../rustc_macros" }
 rustc_serialize = { path = "../rustc_serialize" }

compiler/rustc_errors/src/diagnostic.rs

@@ -15,10 +15,9 @@ use rustc_span::source_map::Spanned;
 use rustc_span::{DUMMY_SP, Span, Symbol};
 use tracing::debug;
 
-use crate::snippet::Style;
 use crate::{
     CodeSuggestion, DiagCtxtHandle, DiagMessage, ErrCode, ErrorGuaranteed, ExplicitBug, Level,
-    MultiSpan, StashKey, SubdiagMessage, Substitution, SubstitutionPart, SuggestionStyle,
+    MultiSpan, StashKey, Style, SubdiagMessage, Substitution, SubstitutionPart, SuggestionStyle,
     Suggestions,
 };