private boolean removeFromPage(ValueStoragePage<T> page, long pageID, short offset) {
		if (page != null) {

			boolean removed = page.remove(offset);
			if (removed) {
				numProperties--;
			}

			if (page.isEmpty()) {
				ht.remove(pageID);
				propertyPageIndex.remove(pageID);
			}
			return removed;
		}
		return false;
	}
Remove the property on page at offset.  If Page is now empty, remove it.
Ghidra/Framework/Generic/src/main/java/ghidra/util/map/ValueMap.java