Rollup merge of #72364 - jsgf:remove-unused-deps, r=Mark-Simulacrum

Remove unused dependencies

Remove some unused dependencies found while while working on #72342.

Author: Dylan-DPC

Cargo.lock

@@ -4088,7 +4088,6 @@ dependencies = [
  "log",
  "measureme",
  "polonius-engine",
- "rustc-rayon",
  "rustc-rayon-core",
  "rustc_apfloat",
  "rustc_ast",
@@ -4151,7 +4150,6 @@ dependencies = [
  "rustc_hir",
  "rustc_index",
  "rustc_infer",
- "rustc_macros",
  "rustc_middle",
  "rustc_session",
  "rustc_span",
@@ -4295,7 +4293,6 @@ dependencies = [
  "rustc_errors",
  "rustc_feature",
  "rustc_fs_util",
- "rustc_index",
  "rustc_span",
  "rustc_target",
  "serialize",
@@ -4328,7 +4325,6 @@ dependencies = [
  "rustc_ast",
  "rustc_data_structures",
  "rustc_hir",
- "rustc_metadata",
  "rustc_middle",
  "rustc_session",
  "rustc_span",

src/librustc_middle/Cargo.toml

@@ -14,7 +14,6 @@ arena = { path = "../libarena" }
 bitflags = "1.2.1"
 scoped-tls = "1.0"
 log = { version = "0.4", features = ["release_max_level_info", "std"] }
-rustc-rayon = "0.3.0"
 rustc-rayon-core = "0.3.0"
 polonius-engine = "0.12.0"
 rustc_apfloat = { path = "../librustc_apfloat" }

src/librustc_mir_build/Cargo.toml

@@ -20,7 +20,6 @@ rustc_index = { path = "../librustc_index" }
 rustc_errors = { path = "../librustc_errors" }
 rustc_hir = { path = "../librustc_hir" }
 rustc_infer = { path = "../librustc_infer" }
-rustc_macros = { path = "../librustc_macros" }
 rustc_serialize = { path = "../libserialize", package = "serialize" }
 rustc_session = { path = "../librustc_session" }
 rustc_span = { path = "../librustc_span" }

src/librustc_session/Cargo.toml

@@ -17,7 +17,6 @@ rustc_target = { path = "../librustc_target" }
 rustc_serialize = { path = "../libserialize", package = "serialize" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_span = { path = "../librustc_span" }
-rustc_index = { path = "../librustc_index" }
 rustc_fs_util = { path = "../librustc_fs_util" }
 num_cpus = "1.0"
 rustc_ast = { path = "../librustc_ast" }

src/librustc_symbol_mangling/Cargo.toml

@@ -20,5 +20,4 @@ rustc_middle = { path = "../librustc_middle" }
 rustc_hir = { path = "../librustc_hir" }
 rustc_target = { path = "../librustc_target" }
 rustc_data_structures = { path = "../librustc_data_structures" }
-rustc_metadata = { path = "../librustc_metadata" }
 rustc_session = { path = "../librustc_session" }