remove index for existing column before recreating index.
remove index for existing column before recreating index.

brentp/gemini,arq5x/gemini,heuermh/gemini,udp3f/gemini,bw2/gemini,xuzetan/gemini,bgruening/gemini,bw2/gemini,arq5x/gemini,bpow/gemini,bgruening/gemini,brentp/gemini,xuzetan/gemini,bpow/gemini,bgruening/gemini,heuermh/gemini,udp3f/gemini,bpow/gemini,arq5x/gemini,xuzetan/gemini,heuermh/gemini,udp3f/gemini,brentp/gemini,bgruening/gemini,bpow/gemini,brentp/gemini,heuermh/gemini,xuzetan/gemini,bw2/gemini,udp3f/gemini,bw2/gemini,arq5x/gemini