FRANKFURT (Reuters) -Bayer shareholder Deka Investment said on Friday it would not join other large investors in supporting the healthcare and agriculture group's management at its annual general meeting. Two other larger German mutual fund management houses, DWS and Union Investment, have said they would vote in favour of approving the management board's actions while shareholder advisory firms Glass Lewis and Institutional Shareholder Services (ISS) have recommended such a vote. Bayer CEO Bill