egl/drm: Don't "fall back" to /dev/dri/card0 if the first open fails

The snprintf stuff here already constructs the right name for the device
node, and if it doesn't, you configured Mesa wrong, don't do that.

Signed-off-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
diff --git a/src/egl/drivers/dri2/platform_drm.c b/src/egl/drivers/dri2/platform_drm.c
index 259b1cd..0ccbd9a 100644
--- a/src/egl/drivers/dri2/platform_drm.c
+++ b/src/egl/drivers/dri2/platform_drm.c
@@ -667,8 +667,6 @@
       int n = snprintf(buf, sizeof(buf), DRM_DEV_NAME, DRM_DIR_NAME, 0);
       if (n != -1 && n < sizeof(buf))
          dri2_dpy->fd = loader_open_device(buf);
-      if (dri2_dpy->fd < 0)
-         dri2_dpy->fd = loader_open_device("/dev/dri/card0");
       gbm = gbm_create_device(dri2_dpy->fd);
       if (gbm == NULL) {
          err = "DRI2: failed to create gbm device";