rustc_passes: remove unused rustc_parse dep

Author: Centril

Cargo.lock

@@ -3807,7 +3807,6 @@ dependencies = [
  "rustc_feature",
  "rustc_hir",
  "rustc_index",
- "rustc_parse",
  "rustc_session",
  "rustc_span",
  "rustc_target",

src/librustc_passes/Cargo.toml

@@ -16,7 +16,6 @@ rustc_errors = { path = "../librustc_errors" }
 rustc_feature = { path = "../librustc_feature" }
 rustc_hir = { path = "../librustc_hir" }
 rustc_index = { path = "../librustc_index" }
-rustc_parse = { path = "../librustc_parse" }
 rustc_session = { path = "../librustc_session" }
 rustc_target = { path = "../librustc_target" }
 syntax = { path = "../libsyntax" }