Merge JoinMarket-Org/joinmarket-clientserver#1665: Qt: Fix no amount entered message (can be sats too, not only BTC)

cde6b4ca9a Fix no amount entered message (can be sats too, not only BTC) (Kristaps Kaupe)

Pull request description:

  Message was wrong since dropdown to switch between BTC and sat amounts was added.

Top commit has no ACKs.

Tree-SHA512: e4f5c85e7fb6f657fe49b8ff1748bc23cbb9bd29dc947991798d907459500423f7348945784798c54ce0e9010a45a5e3e5488b7cdf8b97dd43ec7a45e6bf3fb3

scripts/joinmarket-qt.py

@@ -1205,7 +1205,7 @@ class SpendTab(QWidget):
         if len(self.amountInput.text()) == 0:
             JMQtMessageBox(
                 self,
-                "Amount, in bitcoins, must be provided.",
+                "Amount must be provided.",
                 mbtype='warn', title="Error")
             return False
         if len(self.changeInput.text().strip()) != 0: