Try out to keep codegen-units = 1

Author: tnull

fuzz/ci-fuzz.sh

@@ -22,9 +22,6 @@ cargo clean
 popd
 
 cargo install --color always --force honggfuzz --no-default-features
-# Because we're fuzzing relatively few iterations, the maximum possible
-# compiler optimizations aren't necessary, so switch to defaults.
-sed -i 's/codegen-units = 1//' Cargo.toml
 
 export HFUZZ_BUILD_ARGS="--features honggfuzz_fuzz"