Check if os=linux do not work

i2c/I2C.py

-if os.sys.platform is 'linux':
-    import pylibi2c;
+#import os
+#if os.sys.platform is 'linux':
+import pylibi2c;
 import time
 import logging
 #bus = pylibi2c.I2CDevice('/dev/i2c-1'
@@ -68,33 +69,3 @@ def I2C4server(addr,data,reg=None,read=0):
 #       data[0]=0
        return False;
 
-
-def I2C2server(addr,data,reg=None,read=0):
-  try:
-       if read==3:
-           time.sleep(data[0]/1000.)
-           return True
-       logging.debug(str(("I2C2",addr,reg,data,read)))
-
-#       print("I2C",addr,reg,data,read)
-#       return True;
-       bus=pylibi2c.I2CDevice('/dev/i2c-2',addr)
-       if read==1:
-         length=len(data)
-         bus.iaddr_bytes=0
-         if not(reg is None):
-             bus.ioctl_write(0,str(bytearray([reg])))
-         data[:]=[int(x) for x in bus.ioctl_read(0,length)]
-       else:
-            if reg is None: 
-               bus.iaddr_bytes=0
-               reg=0;
-            bus.ioctl_write(reg,str(bytearray(data)))
-       bus.close()
-       return True;
-  except:
-       if bus: bus.close()
-       print("I2C4 error")
-#       data[0]=0xff
-       return False;
-