Revert "Temporarily deactivate rewatch legacy tests"

This reverts commit 65cbf09.

Author: cknitt

rewatch/tests/suite-ci.sh

@@ -40,4 +40,4 @@ else
   exit 1
 fi
 
-./compile.sh && ./watch.sh && ./lock.sh && ./suffix.sh # && ./legacy.sh
+./compile.sh && ./watch.sh && ./lock.sh && ./suffix.sh && ./legacy.sh