android/guava/src/com/google/common/collect/HashBiMap.java
void removeEntryValueHashKnown(int entry, int valueHash) {
    removeEntry(entry, Hashing.smearedHash(keys[entry]), valueHash);
  }
void removeEntryValueHashKnown(int entry, int valueHash) {
    removeEntry(entry, Hashing.smearedHash(keys[entry]), valueHash);
  }
Removes the entry at the specified index, given the hash of its value.