Update src/libflake/lockfile.cc

Co-authored-by: Sergei Zimmerman <sergei@zimmerman.foo>

Author: fzakaria

src/libflake/lockfile.cc

@@ -200,9 +200,6 @@ std::pair<nlohmann::json, LockFile::KeyMap> LockFile::toJSON() const
             return k->second;
 
         if (!keys.insert(key).second) {
-            /* Resume from the last suffix used for this base key rather than
-               rescanning from 2. The insert check still guards against a name
-               that legitimately occurs in the lock file (e.g. "systems_2"). */
             auto & suffix = keySuffixes[key];
             for (;;) {
                 suffix = suffix < 2 ? 2 : suffix + 1;