Revert "First commit of servo_motor_init() and servo_motor_rotate_by_degree() API"

This reverts commit 54054a8.

Author: JeongJun-Lee

test.py

@@ -79,16 +79,11 @@
 
 # Servo Motor
 # case 11) Rotate servo motor forth and back with speed 50% during 5s and stop
-# n.servo_motor_rotate('out2', 'forward', '50')
-# wait(2000)
-# n.servo_motor_rotate('out2', 'forward', '0')
-# wait(1000)
-# n.servo_motor_rotate('out2', 'backward', '50')
-# wait(2000)
-# n.servo_motor_rotate('out2', 'forward', '0')
-# wait(1000)
-
-# case 12) Rotate servo motor forward by 120 degrees at 50% speed within 3 seconds
-n.servo_motor_init('out1')
-n.servo_motor_rotate_by_degree('out1', 'forward', '50', '120')
-wait(3000)
+n.servo_motor_rotate('out2', 'forward', '50')
+wait(2000)
+n.servo_motor_rotate('out2', 'forward', '0')
+wait(1000)
+n.servo_motor_rotate('out2', 'backward', '50')
+wait(2000)
+n.servo_motor_rotate('out2', 'forward', '0')
+wait(1000)