const_delay: remove

src/lib/const_delay.py

@@ -1,12 +0,0 @@
-import utime
-
-class ConstDelay:
-    def __init__(self, delay):
-        self.delay = delay
-        self.last_run = utime.ticks_us()
-        
-    def wait(self):
-        # FIXME - use loop.call_at instead of call_later to avoid multiple time handling
-        delay = 2 * self.delay - (utime.ticks_us() - self.last_run)
-        self.last_run = utime.ticks_us()
-        return delay