Removed check for sisfb.h.
Removed check for sisfb.h.

DirectFB/directfb,deniskropp/DirectFB,djbclark/directfb-core-DirectFB,mtsekm/test,djbclark/directfb-core-DirectFB,sklnet/DirectFB,kevleyski/directfb,mtsekm/test,deniskropp/DirectFB,sklnet/DirectFB,Distrotech/DirectFB,mtsekm/test,sklnet/DirectFB,kaostao/directfb,jcdubois/DirectFB,dfbdok/DirectFB1,sklnet/DirectFB,Distrotech/DirectFB,lancebaiyouview/DirectFB,kaostao/directfb,Distrotech/DirectFB,deniskropp/DirectFB,kevleyski/DirectFB-1,kevleyski/DirectFB-1,jcdubois/DirectFB,DirectFB/directfb,jcdubois/DirectFB,deniskropp/DirectFB,dfbdok/DirectFB1,kaostao/directfb,kevleyski/directfb,kevleyski/directfb,dfbdok/DirectFB1,kevleyski/DirectFB-1,djbclark/directfb-core-DirectFB,kevleyski/directfb,DirectFB/directfb,djbclark/directfb-core-DirectFB,lancebaiyouview/DirectFB,lancebaiyouview/DirectFB,lancebaiyouview/DirectFB,kevleyski/DirectFB-1