[Qt] Remove CAmount from BitcoinAmountField Q_PROPERTY
[Qt] Remove CAmount from BitcoinAmountField Q_PROPERTY

(cherry picked from commit 7014f382e3fd99226b7d844984e50706e2f67247)

reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin