CVolumeBar: don't use digit height

height is wrong and calculations for digit positions could be confused


Origin commit data
------------------
Commit: 4d2dd415c1
Author: Thilo Graf <dbt@novatux.de>
Date: 2017-01-28 (Sat, 28 Jan 2017)

src/gui/volumebar.cpp

@@ -224,11 +224,6 @@ void CVolumeBar::initVolumeBarDigit()
 //refresh and paint digit
 void CVolumeBar::paintVolumeBarDigit()
 {
-	// digits
-	CTextBox* ctb = vb_digit->getCTextBoxObject();
-	if (ctb)
-		ctb->setFontUseDigitHeight();
-
 	// paint digit
 	vb_digit->paint(CC_SAVE_SCREEN_NO);
 }