Revert "Merge pull request #495 from dtolnay/fuzzlld"

This reverts commit 1993cd3, reversing
changes made to 7cb0f3c.

Author: PaulGrandperrin

.github/workflows/ci.yml

@@ -171,8 +171,6 @@ jobs:
       - run: sudo apt-get install binutils-dev libunwind-dev
       - run: cargo hfuzz build --no-default-features --features honggfuzz
         working-directory: fuzz
-        env:
-          RUSTFLAGS: -Clink-arg=-fuse-ld=lld ${{env.RUSTFLAGS}}  # https://github.com/rust-fuzz/honggfuzz-rs/issues/97
 
   doc:
     name: Documentation