(Corrects name of conference to Delivering Alpha in first paragraph) WASHINGTON (Reuters) – The collapse of the British pound and subsequent sell off in the country’s bond market in recent days do not pose systemic risks but will affect global markets, PIMCO chief investment officer Dan Ivascyn told the CNBC Delivering Alpha conference in New York. Ivascyn added that the Bank of England’s decision overnight to prop up the bond market was a short-term fix that would not address waning investor confidence in British policy. Since Friday’s UK mini-budget budget flagged 45 billion pounds ($48 bill…