The compiler builds a template instantiation file, in the UNIX file system tempinc directory or the TEMPINC PDS, corresponding to each template declaration file. With each compilation, the compiler may add information to the file but it never removes information from the file.
As you develop your program, you may remove template function references or reorganize your program so that the template instantiation files become obsolete. You can periodicaly delete the TEMPINC destination and recompile your program.