Remove CI feature from sanitize workflow

neqo uses this feature, but it's not present in neqo-crypto or nss-rs

Author: Not-Nik

.github/workflows/sanitize.yml

@@ -79,7 +79,7 @@ jobs:
             PWD=$(pwd)
             export LSAN_OPTIONS="suppressions=$PWD/suppressions.txt"
           fi
-          cargo test --locked -Z build-std --features ci --target "$TARGET"
+          cargo test --locked -Z build-std --target "$TARGET"
           cargo hack --workspace test --locked -Z build-std --target "$TARGET"
 
       - name: Save simulation seeds artifact