ROUTINE
-------

void ug_io_free_2d_grid (INT_2D * Bnd_Edge_Connectivity,
                         INT_1D * Bnd_Edge_Grid_BC_Flag,
                         INT_1D * Bnd_Edge_ID_Flag,
                         INT_4D * Quad_Connectivity,
                         INT_3D * Tria_Connectivity,
                         DOUBLE_2D * Coordinates,
                         DOUBLE_1D * Initial_Normal_Spacing,
                         DOUBLE_1D * BL_Thickness)

DESCRIPTION
-----------

Free 2D grid data arrays.

INPUT ARGUMENTS
---------------

Bnd_Edge_Connectivity    : Boundary edge connectivity.

Bnd_Edge_Grid_BC_Flag    : Boundary edge grid boundary condition flag.

Bnd_Edge_ID_Flag         : Boundary edge ID flag.

Quad_Connectivity        : Quad face connectivity.

Tria_Connectivity        : Tria face connectivity.

Coordinates              : Grid node coordinates.

Initial_Normal_Spacing   : Grid node initial normal spacing for boundary-layer.

BL_Thickness             : Thickness of boundary-layer for boundary-layer grids.
