[gtk-doc] common: remove double she-bang

[Stefan Sauer <stefkost src gnome org>]

commit eaa289c9c52cbd000e6c6fb9c8e96730763eac56
Author: Stefan Sauer <ensonic users sf net>
Date:   Sat Aug 12 12:41:37 2017 +0200

    common: remove double she-bang

 tests/common.py |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/tests/common.py b/tests/common.py
index 8b45f1d..0c32525 100755
--- a/tests/common.py
+++ b/tests/common.py
@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-#!/usr/bin/env python
 # -*- python -*-
 #
 # gtk-doc - GTK DocBook documentation generator.