To do that in StatCrunch:
Scroll down to row 15 of the data. You will see that this contains the values of the variables for the elephant.
Click on the row header "15" to select the entire row of data.
Choose Edit -> Rows -> Delete
In response to "Delete 1 selected rows?" press Compute!
You will see that the values for the elephant have been removed from the data.
Recompute the correlation between gestation and longevity.