Remove nc_inq_base_pe()/nc_set_base_pe() from dispatch table?

[edhartnett]

This is related to #1056

We have nc_inq_base_pe() and nc_set_base_pe(). These are obsolete functions that do nothing. The only valid value for pe is zero, and it is ignored. (See #1459 for more info on these ancient Cray functions, which no longer work, on Crays or any other systems.)

Can we remove these two functions from the dispatch table?

Seems like we can, and still support them, by sill supporting the functions (although they do nothing) in libsrc, and simply removing them from all dispatch tables.

The advantage is that we will reduce the number of functions that each dispatch layer must support, and remove the do-nothing version of these functions in libdispatch/ncnotnc3.c.

@DennisHeimbigner do you see any difficulty or problem with this?

[edhartnett]

OK, I just gave this a whack and it works well and was easy. PR up shortly.