Merge #2745

2745: remove unused file r=matklad a=matklad



Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>

crates/ra_syntax/src/grammar.ron

@@ -1,6 +0,0 @@
-// Stores definitions which must be used in multiple places
-// See `cargo xtask codegen` (defined in xtasks/src/main.rs)
-Grammar(
-    ast: {
-    },
-)