minor cleanup of dead code

Author: CTho9305

adafruit_mpu6050.py

@@ -39,15 +39,13 @@
 __version__ = "0.0.0+auto.0"
 __repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_MPU6050.git"
 
-
 from math import radians
 from time import sleep
 from adafruit_register.i2c_struct import UnaryStruct, ROUnaryStruct
 from adafruit_register.i2c_struct_array import StructArray
 from adafruit_register.i2c_bit import RWBit
 from adafruit_register.i2c_bits import RWBits
 from adafruit_bus_device import i2c_device
-from struct import unpack_from
 
 try:
     from typing import Tuple