Assume you have installed one of your application programs as function
HUSR001. The function contains macro USRMAC01, which is no longer
required. Here is an example of a SYSMOD containing a ++MAC statement
to delete the macro from the target and distribution libraries:
++USERMOD(USR0001) /* User modification */.
++VER(Z038) FMID(HUSR001) /* for user application. */.
++MAC(USRMAC01) /* Delete this macro. */
DELETE /* */.