sdbus++: switch to python3

Python2 is DEAD!  Long live Python3!

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ifd46a4aeb41fb0e6db2f4310a603b727a5a2c2ff
diff --git a/tools/sdbus++ b/tools/sdbus++
index 6cfcb9e..fa12677 100755
--- a/tools/sdbus++
+++ b/tools/sdbus++
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 import sdbusplus
 import mako.lookup
 import argparse
@@ -35,11 +35,7 @@
 
     args = parser.parse_args()
 
-    if sys.version_info < (3, 0):
-        lookup = mako.lookup.TemplateLookup(directories=[args.templatedir],
-                                            disable_unicode=True)
-    else:
-        lookup = mako.lookup.TemplateLookup(directories=[args.templatedir])
+    lookup = mako.lookup.TemplateLookup(directories=[args.templatedir])
 
     instance = valid_types[args.typeName].load(args.item, args.rootdir)
     function = getattr(instance, valid_processes[args.process])