Remove unused methods from Handler

Author: Mark-Simulacrum

src/librustc/session/mod.rs

@@ -365,12 +365,6 @@ impl Session {
     pub fn span_note_without_error<S: Into<MultiSpan>>(&self, sp: S, msg: &str) {
         self.diagnostic().span_note_without_error(sp, msg)
     }
-    pub fn span_unimpl<S: Into<MultiSpan>>(&self, sp: S, msg: &str) -> ! {
-        self.diagnostic().span_unimpl(sp, msg)
-    }
-    pub fn unimpl(&self, msg: &str) -> ! {
-        self.diagnostic().unimpl(msg)
-    }
 
     pub fn buffer_lint<S: Into<MultiSpan>>(
         &self,

src/librustc_errors/lib.rs

@@ -612,9 +612,6 @@ impl Handler {
         db.set_span(sp);
         db
     }
-    pub fn span_unimpl<S: Into<MultiSpan>>(&self, sp: S, msg: &str) -> ! {
-        self.span_bug(sp, &format!("unimplemented {}", msg));
-    }
     pub fn failure(&self, msg: &str) {
         DiagnosticBuilder::new(self, FailureNote, msg).emit()
     }
@@ -648,9 +645,6 @@ impl Handler {
         db.emit();
         panic!(ExplicitBug);
     }
-    pub fn unimpl(&self, msg: &str) -> ! {
-        self.bug(&format!("unimplemented {}", msg));
-    }
 
     fn bump_err_count(&self) {
         self.err_count.fetch_add(1, SeqCst);

src/libsyntax/ext/base.rs

@@ -1048,9 +1048,6 @@ impl<'a> ExtCtxt<'a> {
     pub fn span_warn<S: Into<MultiSpan>>(&self, sp: S, msg: &str) {
         self.parse_sess.span_diagnostic.span_warn(sp, msg);
     }
-    pub fn span_unimpl<S: Into<MultiSpan>>(&self, sp: S, msg: &str) -> ! {
-        self.parse_sess.span_diagnostic.span_unimpl(sp, msg);
-    }
     pub fn span_bug<S: Into<MultiSpan>>(&self, sp: S, msg: &str) -> ! {
         self.parse_sess.span_diagnostic.span_bug(sp, msg);
     }