Calibration patch for newer AHT20's

Updating calibration function so that it isn't required to pass for newer AHT20's. This same change was made for the [Arduino library](adafruit/Adafruit_AHTX0#13)

adafruit_ahtx0.py

@@ -106,16 +106,14 @@ def reset(self) -> None:
         time.sleep(0.02)  # 20ms delay to wake up
 
     def calibrate(self) -> bool:
-        """Ask the sensor to self-calibrate. Returns True on success, False otherwise"""
+        """Ask the sensor to self-calibrate. May not 'succeed' on newer AHT20s."""
         self._buf[0] = AHTX0_CMD_CALIBRATE
         self._buf[1] = 0x08
         self._buf[2] = 0x00
         with self.i2c_device as i2c:
             i2c.write(self._buf, start=0, end=3)
         while self.status & AHTX0_STATUS_BUSY:
             time.sleep(0.01)
-        if not self.status & AHTX0_STATUS_CALIBRATED:
-            return False
         return True
 
     @property