1 files changed, 0 insertions, 51 deletions
diff --git a/vendor/syn/build.rs b/vendor/syn/build.rs
deleted file mode 100644
index 1a2c077bf..000000000
--- a/vendor/syn/build.rs
+++ /dev/null
@@ -1,51 +0,0 @@
-use std::env;
-use std::process::Command;
-use std::str;
-
-// The rustc-cfg strings below are *not* public API. Please let us know by
-// opening a GitHub issue if your build environment requires some way to enable
-// these cfgs other than by executing our build script.
-fn main() {
-    let compiler = match rustc_version() {
-        Some(compiler) => compiler,
-        None => return,
-    };
-
-    if compiler.minor < 36 {
-        println!("cargo:rustc-cfg=syn_omit_await_from_token_macro");
-    }
-
-    if compiler.minor < 39 {
-        println!("cargo:rustc-cfg=syn_no_const_vec_new");
-    }
-
-    if compiler.minor < 40 {
-        println!("cargo:rustc-cfg=syn_no_non_exhaustive");
-    }
-
-    if compiler.minor < 56 {
-        println!("cargo:rustc-cfg=syn_no_negative_literal_parse");
-    }
-
-    if !compiler.nightly {
-        println!("cargo:rustc-cfg=syn_disable_nightly_tests");
-    }
-}
-
-struct Compiler {
-    minor: u32,
-    nightly: bool,
-}
-
-fn rustc_version() -> Option<Compiler> {
-    let rustc = env::var_os("RUSTC")?;
-    let output = Command::new(rustc).arg("--version").output().ok()?;
-    let version = str::from_utf8(&output.stdout).ok()?;
-    let mut pieces = version.split('.');
-    if pieces.next() != Some("rustc 1") {
-        return None;
-    }
-    let minor = pieces.next()?.parse().ok()?;
-    let nightly = version.contains("nightly") || version.ends_with("-dev");
-    Some(Compiler { minor, nightly })
-}