public synchronized boolean remove(long index) {
		long pageID = getPageID(index);
		short offset = getPageOffset(index);

		ValueStoragePage<T> page = getPage(pageID);

		return removeFromPage(page, pageID, offset);
	}
Remove the property value at the given index.
@return true if the property value was removed, false
  otherwise.
@param index the long representation of an address.
Ghidra/Framework/Generic/src/main/java/ghidra/util/map/ValueMap.java