Remove testing_only_libclang_3_9 and expectations

Author: kulp

Cargo.toml

@@ -84,4 +84,3 @@ testing_only_extra_assertions = []
 testing_only_libclang_9 = []
 testing_only_libclang_5 = []
 testing_only_libclang_4 = []
-testing_only_libclang_3_9 = []

bindgen-integration/Cargo.toml

@@ -19,4 +19,3 @@ 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"]
 testing_only_libclang_4 = ["bindgen/testing_only_libclang_4"]
-testing_only_libclang_3_9 = ["bindgen/testing_only_libclang_3_9"]

src/main.rs

@@ -25,8 +25,6 @@ fn clang_version_check() {
         Some((5, 0))
     } else if cfg!(feature = "testing_only_libclang_4") {
         Some((4, 0))
-    } else if cfg!(feature = "testing_only_libclang_3_9") {
-        Some((3, 9))
     } else {
         None
     };

tests/expectations/build.rs

@@ -9,7 +9,6 @@ use std::io::Write;
 use std::path::Path;
 
 const LIBCLANG_VERSION_DIRS: &'static [&'static str] = &[
-    "libclang-3.9",
     "libclang-4",
     "libclang-5",
     "libclang-9",