pbio/platform/move_hub: Use default differentiation window.

This costs more bss, but now motors work the same on all platforms.

Author: laurensvalk

lib/pbio/platform/move_hub/pbioconfig.h

@@ -21,7 +21,3 @@
 #define PBIO_CONFIG_UARTDEV_FIRST_PORT      PBIO_PORT_ID_C
 
 #define PBIO_CONFIG_ENABLE_SYS              (1)
-
-// Use shorter window size than default to reduce
-// size of static motor position buffer.
-#define PBIO_CONFIG_DIFFERENTIATOR_WINDOW_MS (50)