[platform] reverts incorrect environment loading fix (IDEA-192345)

bin/mac/printenv.py

@@ -12,8 +12,6 @@ if len(sys.argv) != 2:
 f = open(sys.argv[1], 'w')
 try:
     for key, value in os.environ.items():
-        if isinstance(key, unicode): key = key.encode('utf-8')
-        if isinstance(value, unicode): value = value.encode('utf-8')
         f.writelines([key, '=', value, '\0'])
 finally:
     f.close()