revert onetime nightly change

Author: noahhuck

infra/nightly.sh

@@ -24,7 +24,6 @@ for bench in "$BENCHDIR"/*; do
   rm -rf "$REPORTDIR"/"$name"
 
   racket -y "src/main.rkt" report \
-         --enable generate:egglog \
          --seed "$SEED" \
          "$@" \
          "$bench" "$REPORTDIR"/"$name"