Use \tempo command for midi speed

* Remove Metronome mark engraver
* Remove midiQuarterNoteSpeed

private_includes/base/basic_format_and_style_settings.ily

@@ -49,6 +49,7 @@ generalLayout = \layout {
   \context {
     \Score
     \remove "Bar_number_engraver"
+    \remove "Metronome_mark_engraver"
     \RemoveEmptyStaves
     \override VerticalAxisGroup.remove-first = ##t
     \overrideTimeSignatureSettings