When this object is set, the agent will delete all rows
from the extremeSmartTrapInstanceTable which meet the
following rules:
1. The InstanceTableIndex is equal to the value obtained by
taking the two most significant bytes of this integer and
right-shifting it by two bytes as an unsigned int.
2. The InstanceTableSubIndex is less than or equal to the
value obtained by masking this object value with 0x0000FFFF.
If the value obtained is zero, then all rows with the specified
InstanceTableIndex should be deleted.