public static void disassociate(DataType dataType) {
		DataTypeManager dataTypeManager = dataType.getDataTypeManager();
		int transactionID = dataTypeManager.startTransaction("Disassociate Data Type");
		try {
			dataTypeManager.disassociate(dataType);
		}
		finally {
			dataTypeManager.endTransaction(transactionID, true);
		}
	}
If the indicated data type is associated with a source archive, this will remove the
association.
@param dataType the data type to be disassociated from a source archive.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/datamgr/DataTypeSynchronizer.java