Remove unused dependencies

Cargo.lock

@@ -3079,8 +3079,6 @@ dependencies = [
  "graphviz",
  "jobserver",
  "log",
- "measureme",
- "num_cpus",
  "parking_lot",
  "polonius-engine",
  "rustc-rayon",
@@ -3090,7 +3088,6 @@ dependencies = [
  "rustc_error_codes",
  "rustc_errors",
  "rustc_feature",
- "rustc_fs_util",
  "rustc_hir",
  "rustc_index",
  "rustc_macros",
@@ -3278,7 +3275,6 @@ dependencies = [
  "jemalloc-sys",
  "rustc_codegen_ssa",
  "rustc_driver",
- "rustc_target",
 ]
 
 [[package]]
@@ -3409,7 +3405,6 @@ dependencies = [
  "rustc_codegen_utils",
  "rustc_data_structures",
  "rustc_errors",
- "rustc_expand",
  "rustc_feature",
  "rustc_fs_util",
  "rustc_hir",
@@ -3497,7 +3492,6 @@ name = "rustc_driver"
 version = "0.0.0"
 dependencies = [
  "env_logger 0.7.1",
- "graphviz",
  "lazy_static 1.3.0",
  "log",
  "rustc",
@@ -3513,7 +3507,6 @@ dependencies = [
  "rustc_mir",
  "rustc_parse",
  "rustc_plugin_impl",
- "rustc_resolve",
  "rustc_save_analysis",
  "rustc_span",
  "rustc_target",
@@ -3660,7 +3653,6 @@ dependencies = [
  "log",
  "rustc",
  "rustc_data_structures",
- "rustc_error_codes",
  "rustc_feature",
  "rustc_hir",
  "rustc_index",
@@ -4462,8 +4454,6 @@ dependencies = [
 name = "syntax"
 version = "0.0.0"
 dependencies = [
- "bitflags",
- "lazy_static 1.3.0",
  "log",
  "rustc_data_structures",
  "rustc_error_codes",

src/librustc/Cargo.toml

@@ -15,7 +15,6 @@ bitflags = "1.2.1"
 fmt_macros = { path = "../libfmt_macros" }
 graphviz = { path = "../libgraphviz" }
 jobserver = "0.1"
-num_cpus = "1.0"
 scoped-tls = "1.0"
 log = { version = "0.4", features = ["release_max_level_info", "std"] }
 rustc-rayon = "0.3.0"
@@ -36,8 +35,6 @@ backtrace = "0.3.40"
 parking_lot = "0.9"
 byteorder = { version = "1.3" }
 chalk-engine = { version = "0.9.0", default-features=false }
-rustc_fs_util = { path = "../librustc_fs_util" }
 smallvec = { version = "1.0", features = ["union", "may_dangle"] }
-measureme = "0.5"
 rustc_error_codes = { path = "../librustc_error_codes" }
 rustc_session = { path = "../librustc_session" }

src/librustc_codegen_llvm/Cargo.toml

@@ -31,5 +31,4 @@ rustc_session = { path = "../librustc_session" }
 rustc_target = { path = "../librustc_target" }
 smallvec = { version = "1.0", features = ["union", "may_dangle"] }
 syntax = { path = "../libsyntax" }
-rustc_expand = { path = "../librustc_expand" }
 rustc_span = { path = "../librustc_span" }

src/librustc_driver/Cargo.toml

@@ -10,7 +10,6 @@ path = "lib.rs"
 crate-type = ["dylib"]
 
 [dependencies]
-graphviz = { path = "../libgraphviz" }
 lazy_static = "1.0"
 log = "0.4"
 env_logger = { version = "0.7", default-features = false }
@@ -30,7 +29,6 @@ rustc_codegen_utils = { path = "../librustc_codegen_utils" }
 rustc_error_codes = { path = "../librustc_error_codes" }
 rustc_interface = { path = "../librustc_interface" }
 rustc_serialize = { path = "../libserialize", package = "serialize" }
-rustc_resolve = { path = "../librustc_resolve" }
 syntax = { path = "../libsyntax" }
 rustc_span = { path = "../librustc_span" }
 

src/librustc_lint/Cargo.toml

@@ -19,5 +19,4 @@ rustc_span = { path = "../librustc_span" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_feature = { path = "../librustc_feature" }
 rustc_index = { path = "../librustc_index" }
-rustc_error_codes = { path = "../librustc_error_codes" }
 rustc_session = { path = "../librustc_session" }

src/libsyntax/Cargo.toml

@@ -10,11 +10,9 @@ path = "lib.rs"
 doctest = false
 
 [dependencies]
-bitflags = "1.2.1"
 rustc_serialize = { path = "../libserialize", package = "serialize" }
 log = "0.4"
 scoped-tls = "1.0"
-lazy_static = "1.0.0"
 rustc_span = { path = "../librustc_span" }
 errors = { path = "../librustc_errors", package = "rustc_errors" }
 rustc_data_structures = { path = "../librustc_data_structures" }

src/rustc/Cargo.toml

@@ -9,7 +9,6 @@ name = "rustc_binary"
 path = "rustc.rs"
 
 [dependencies]
-rustc_target = { path = "../librustc_target" }
 rustc_driver = { path = "../librustc_driver" }
 
 # Make sure rustc_codegen_ssa ends up in the sysroot, because this