[AGPGART] Remove pointless code from agp_generic_create_gatt_table()

Signed-off-by: Dave Jones <davej@redhat.com>

drivers/char/agp/generic.c

@@ -809,12 +809,10 @@ int agp_generic_create_gatt_table(struct agp_bridge_data *bridge)
 				case U32_APER_SIZE:
 					bridge->current_size = A_IDX32(bridge);
 					break;
-					/* This case will never really happen. */
+				/* These cases will never really happen. */
 				case FIXED_APER_SIZE:
 				case LVL2_APER_SIZE:
 				default:
-					bridge->current_size =
-					    bridge->current_size;
 					break;
 				}
 				temp = bridge->current_size;