remove host function==grid
remove host function==grid

Before we had all the personalities, we left a "grid" value in the
plenary host template to provide a default for the host function.
All the personalities now specify this and the default is no longer
appropriate.

Reviewed-By: Wesley Hertlein <ca32100e9f664971b15d1470ddc7f009d907efd3@morganstanley.com>

stdweird/aquilon,quattor/aquilon,guillaume-philippon/aquilon,guillaume-philippon/aquilon,quattor/aquilon,stdweird/aquilon,stdweird/aquilon,guillaume-philippon/aquilon,quattor/aquilon