Revert "iris: Avoid abort() if kernel can't allocate memory"

This reverts commit f9d8d9acbb.

Now ENOMEM is handled in submit_batch(), we don't need to check it for
resetting anymore.

Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20449>

src/gallium/drivers/iris/iris_batch.c

@@ -1098,9 +1098,8 @@ _iris_batch_flush(struct iris_batch *batch, const char *file, int line)
     * with a new logical context, and inform iris_context that all state
     * has been lost and needs to be re-initialized.  If this succeeds,
     * dubiously claim success...
-    * Also handle ENOMEM here.
     */
-   if (ret == -EIO || ret == -ENOMEM) {
+   if (ret == -EIO) {
       enum pipe_reset_status status = iris_batch_check_for_reset(batch);
       if (batch->reset->reset) {
          /* Tell gallium frontends the device is lost and it was our fault. */