Remove unused code (rust-lang#2398)

* Use the `clippy::missing_docs_in_private_items` instead of the `doc_mod` macro

* remove dead code

* Fix clippy warnings

* Run rustfmt

* update config field

* some nits

* more nits

* remove the `testing_only_docs` feature

Author: pvdrz

.github/workflows/bindgen.yml

@@ -107,7 +107,6 @@ jobs:
         # `static` feature is not testable atm.
         feature_runtime: [0, 1]
         feature_extra_asserts: [0]
-        feature_testing_only_docs: [0]
 
         include:
           # Test with extra asserts + docs just with latest llvm versions to
@@ -117,7 +116,6 @@ jobs:
             release_build: 0
             no_default_features: 0
             feature_extra_asserts: 1
-            feature_testing_only_docs: 1
 
           # FIXME: Seems installing multiarch packages fails:
           #
@@ -132,15 +130,13 @@ jobs:
           #   main_tests: 0
           #   release_build: 0
           #   feature_extra_asserts: 0
-          #   feature_testing_only_docs: 0
 
           # Ensure stuff works on macos too
           - os: macos-latest
             llvm_version: "9.0"
             release_build: 0
             no_default_features: 0
             feature_extra_asserts: 0
-            feature_testing_only_docs: 0
     steps:
       - uses: actions/checkout@v3
 
@@ -181,7 +177,6 @@ jobs:
           BINDGEN_RELEASE_BUILD: ${{matrix.release_build}}
           BINDGEN_FEATURE_RUNTIME: ${{matrix.feature_runtime}}
           BINDGEN_FEATURE_EXTRA_ASSERTS: ${{matrix.feature_extra_asserts}}
-          BINDGEN_FEATURE_TESTING_ONLY_DOCS: ${{matrix.feature_testing_only_docs}}
           BINDGEN_NO_DEFAULT_FEATURES: ${{matrix.no_default_features}}
         run: ./ci/test.sh
 

CONTRIBUTING.md

@@ -79,14 +79,6 @@ versions of llvm, or specify the path of the desired libclang explicitly:
 $ export LIBCLANG_PATH=path/to/clang-9.0/lib
 ```
 
-Additionally, you may want to build and test with the `testing_only_docs`
-feature to ensure that you aren't forgetting to document types and functions. CI
-will catch it if you forget, but the turn around will be a lot slower ;)
-
-```
-$ cargo build --features testing_only_docs
-```
-
 ## Testing
 
 ### Overview

bindgen-integration/Cargo.toml

@@ -14,7 +14,6 @@ cc = "1.0"
 static = ["bindgen/static"]
 runtime = ["bindgen/runtime"]
 
-testing_only_docs = ["bindgen/testing_only_docs"]
 testing_only_extra_assertions = ["bindgen/testing_only_extra_assertions"]
 testing_only_libclang_9 = ["bindgen/testing_only_libclang_9"]
 testing_only_libclang_5 = ["bindgen/testing_only_libclang_5"]

bindgen-tests/Cargo.toml

@@ -17,7 +17,6 @@ static = ["bindgen/static"]
 runtime = ["bindgen/runtime"]
 which-rustfmt = ["bindgen/which-rustfmt"]
 
-testing_only_docs = ["bindgen/testing_only_docs"]
 testing_only_extra_assertions = ["bindgen/testing_only_extra_assertions"]
 testing_only_libclang_9 = ["bindgen/testing_only_libclang_9"]
 testing_only_libclang_5 = ["bindgen/testing_only_libclang_5"]

bindgen/Cargo.toml

@@ -52,7 +52,6 @@ experimental = []
 
 # These features only exist for CI testing -- don't use them if you're not hacking
 # on bindgen!
-testing_only_docs = []
 testing_only_extra_assertions = []
 testing_only_libclang_9 = []
 testing_only_libclang_5 = []

bindgen/callbacks.rs

@@ -146,7 +146,7 @@ pub enum TypeKind {
     Union,
 }
 
-/// An struct providing information about the item being passed to `ParseCallbacks::generated_name_override`.
+/// A struct providing information about the item being passed to [`ParseCallbacks::generated_name_override`].
 #[non_exhaustive]
 pub struct ItemInfo<'a> {
     /// The name of the item