chore: remoce OCI Mi300X runner (#248)

* Delete runners/launch_mi300x-oci.sh

* Remove mi300x-oci_0 from runners.yaml

Removed 'mi300x-oci_0' from the runners configuration.

Author: cquil11

.github/configs/runners.yaml

@@ -31,7 +31,6 @@ mi300x:
 - 'mi300x-amd_3'
 - 'mi300x-amd_4'
 - 'mi300x-cr_0'
-- 'mi300x-oci_0'
 - 'mi300x-amds_0'
 - 'mi300x-amds_1'
 - 'mi300x-amds_2'