Edit BBEditor Mouse tool tip

Edit the tool tip to remove The Double click top open in piano roll
as per #1776 #1783

src/tracks/Pattern.cpp

@@ -706,8 +706,7 @@ PatternView::PatternView( Pattern* pattern, TrackView* parent ) :
 	setFixedHeight( parentWidget()->height() - 2 );
 
 	ToolTip::add( this,
-		tr( "double-click to open this pattern in piano-roll\n"
-			"use mouse wheel to set volume of a step" ) );
+		tr( "use mouse wheel to set volume of a step" ) );
 	setStyle( QApplication::style() );
 }