initIpUnidig() comments showed some obsolete arguments

iocBoot/iocvxWorks/ipUnidig.cmd

@@ -8,9 +8,7 @@
 #              int msecPoll,
 #              int intVec,
 #              int risingMask,
-#              int fallingMask,
-#              int biMask,
-#              int maxClients)
+#              int fallingMask)
 # portName  = name to give this asyn port
 # carrier     = IPAC carrier number (0, 1, etc.)
 # slot        = IPAC slot (0,1,2,3, etc.)