qt: Remove unused functions from BitcoinUnits

Remove two functions that are now unused.

src/qt/bitcoinunits.cpp

@@ -80,28 +80,6 @@ qint64 BitcoinUnits::factor(int unit)
     }
 }
 
-qint64 BitcoinUnits::maxAmount(int unit)
-{
-    switch(unit)
-    {
-    case BTC:  return Q_INT64_C(21000000);
-    case mBTC: return Q_INT64_C(21000000000);
-    case uBTC: return Q_INT64_C(21000000000000);
-    default:   return 0;
-    }
-}
-
-int BitcoinUnits::amountDigits(int unit)
-{
-    switch(unit)
-    {
-    case BTC: return 8; // 21,000,000 (# digits, without commas)
-    case mBTC: return 11; // 21,000,000,000
-    case uBTC: return 14; // 21,000,000,000,000
-    default: return 0;
-    }
-}
-
 int BitcoinUnits::decimals(int unit)
 {
     switch(unit)

src/qt/bitcoinunits.h

@@ -82,10 +82,6 @@ public:
     static QString description(int unit);
     //! Number of Satoshis (1e-8) per unit
     static qint64 factor(int unit);
-    //! Max amount per unit
-    static qint64 maxAmount(int unit);
-    //! Number of amount digits (to represent max number of coins)
-    static int amountDigits(int unit);
     //! Number of decimals left
     static int decimals(int unit);
     //! Format as string