micropython/drivers/sensor/pasco2: Cleanup and adding code comments.

Signed-off-by: NikhitaR-IFX <Nikhita.Rajasekhar@infineon.com>

micropython/drivers/sensor/pasco2/pasco2.py

@@ -1,3 +1,5 @@
+# Infineon XENSIV PAS CO2 sensor driver for MicroPython
+
 from machine import I2C
 from utime import sleep, sleep_ms
 
@@ -16,8 +18,6 @@ _PASCO2_ERROR = -1
 addr = 0
 mask = 1
 
-i2c = I2C(0)
-
 class PASCO2:
     """IFX - XENSIV PAS CO2 sensor driver"""
     # RegAddr, Mask, <Later extend with register access type, bit position etc.>
@@ -66,7 +66,6 @@ class PASCO2:
         writeData = bytes([(readData & ~(reg[mask])) | modeVal])
         self._write_reg(_PASCO2_REG_MEAS_CFG,writeData)
         
-        
     def initialize(self):
         """ Public function to initialize the sensor """
         try: