Remove a hack around an LLVM bug

This has since been fixed in rust-lang/rust#52506

Author: alexcrichton

crates/cli-support/src/lib.rs

@@ -321,7 +321,6 @@ fn extract_programs(module: &mut Module) -> Result<Vec<shared::Program>, Error>
         to_remove.push(i);
 
         let mut payload = custom.payload();
-        let mut added_programs = Vec::new();
         while payload.len() > 0 {
             let len = ((payload[0] as usize) << 0)
                 | ((payload[1] as usize) << 8)
@@ -330,19 +329,6 @@ fn extract_programs(module: &mut Module) -> Result<Vec<shared::Program>, Error>
             let (a, b) = payload[4..].split_at(len as usize);
             payload = b;
 
-            // Due to a nasty LLVM bug it's currently possible for LLVM to
-            // duplicate custom section directives in intermediate object files.
-            // This means that we could see multiple program directives when in
-            // fact we were originally only meant to see one!
-            //
-            // Work around the issue here until the upstream bug,
-            // https://bugs.llvm.org/show_bug.cgi?id=38184, is hopefully fixed
-            // via some other means.
-            if added_programs.iter().any(|p| a == *p) {
-                continue
-            }
-            added_programs.push(a);
-
             let p: shared::ProgramOnlySchema = match serde_json::from_slice(&a) {
                 Ok(f) => f,
                 Err(e) => bail!("failed to decode what looked like wasm-bindgen data: {}", e),