By Huw Jones LONDON (Reuters) -Norwegian bank DNB is holding ineligible bonds in one of its main capital buffers and they should be replaced, the European Union’s banking watchdog said on Thursday. The European Banking Authority (EBA) is scrutinising the quality of capital buffers to ensure they do not contain so-called “legacy instruments” which are too complex to tap quickly in a crisis. A June 2025 deadline has been set for removing discount perpetual securities or ‘Discos’ from supplementary Tier 2 capital under the EU’s revised bank capital rules. “After careful consideration of the conce…