Fix the proc-macro-srv

Author: bjorn3

src/tools/rust-analyzer/crates/proc-macro-srv/src/server_impl/rust_analyzer_span.rs

@@ -312,18 +312,6 @@ impl server::Span for RaSpanServer {
         // FIXME stub, requires db
         SourceFile {}
     }
-    fn save_span(&mut self, _span: Self::Span) -> usize {
-        // FIXME, quote is incompatible with third-party tools
-        // This is called by the quote proc-macro which is expanded when the proc-macro is compiled
-        // As such, r-a will never observe this
-        0
-    }
-    fn recover_proc_macro_span(&mut self, _id: usize) -> Self::Span {
-        // FIXME, quote is incompatible with third-party tools
-        // This is called by the expansion of quote!, r-a will observe this, but we don't have
-        // access to the spans that were encoded
-        self.call_site
-    }
     /// Recent feature, not yet in the proc_macro
     ///
     /// See PR:

src/tools/rust-analyzer/crates/proc-macro-srv/src/server_impl/token_id.rs

@@ -292,12 +292,6 @@ impl server::Span for TokenIdServer {
     fn source_file(&mut self, _span: Self::Span) -> Self::SourceFile {
         SourceFile {}
     }
-    fn save_span(&mut self, _span: Self::Span) -> usize {
-        0
-    }
-    fn recover_proc_macro_span(&mut self, _id: usize) -> Self::Span {
-        self.call_site
-    }
     /// Recent feature, not yet in the proc_macro
     ///
     /// See PR: