take a look:

you never undelegate your steem power from minnow booster, how you want to get your power back?
take a look at this guide to undelegate your power, the power will go back on 7 days.
when you done go to steemd and see if you really undelegate the power

https://steemit.com/steemit/@raised2b/how-to-undelegate-steem-power-in-4-easy-steps