py: harmonic,melodic: revert to non-fm synth

This is a hotfix for the 1.0.0 release because otherwise the two demos
sound very, very broken.

Do not merge back into main!

python_payload/apps/demo_harmonic/__init__.py

@@ -26,19 +26,17 @@ class HarmonicApp(Application):
         self.color_intensity = 0.0
         self.chord_index = 0
         self.chord: List[int] = []
-        self.synths = [blm.new(bl00mbox.patches.tinysynth_fm) for i in range(5)]
+        self.synths = [blm.new(bl00mbox.patches.tinysynth) for i in range(5)]
         self.cp_prev = captouch.read()
 
         for i, synth in enumerate(self.synths):
             synth.signals.decay = 500
-            synth.signals.waveform = -32767
+            synth.signals.waveform = 0
             synth.signals.attack = 50
             synth.signals.volume = 0.3 * 32767
             synth.signals.sustain = 0.9 * 32767
             synth.signals.release = 800
-            synth.signals.fm_waveform = -32767
             synth.signals.output = blm.mixer
-            # synth.fm = 1.5
 
         self._set_chord(3)
         self.prev_captouch = [0] * 10

python_payload/apps/demo_melodic/__init__.py

@@ -10,7 +10,7 @@ from st3m.ui.view import ViewManager
 from ctx import Context
 
 octave = 0
-synths: List[bl00mbox.patches.tinysynth_fm] = []
+synths: List[bl00mbox.patches.tinysynth] = []
 scale = [0, 2, 4, 5, 7, 9, 11]
 
 
@@ -79,7 +79,7 @@ def run(input: InputController) -> None:
 def init() -> None:
     global synths
     for i in range(1):
-        synth = blm.new(bl00mbox.patches.tinysynth_fm)
+        synth = blm.new(bl00mbox.patches.tinysynth)
         synth.signals.output = blm.mixer
         synths += [synth]
     for synth in synths: