If your RACF installation exits are used to 'turn on' the PROTECT=YES option, and those exits are removed, no DFSMSdfp requests are made to RACF to protect tape data, even if TAPEDSN is activated. All volumes get protected at data set CLOSE time when DFSMSrmm creates TAPEVOL profiles.

Whether or not you choose to use the RACF TAPEDSN option, the results in creating a security environment for your installation are the same before and after you remove your installation exits.