support/testing: drop legacy python2 code

Now that we only have python3, we will never have to test a
python2-based build, so we can drop python2 compatibility
cruft.

In python3, print already is a function, we don't need to
import it from the future.

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

support/testing/tests/package/test_python.py

@@ -27,7 +27,7 @@ class TestPythonBase(infra.basetest.BRTest):
         self.assertRunOk(cmd, timeout)
 
     def libc_time_test(self, timeout=-1):
-        cmd = self.interpreter + " -c 'from __future__ import print_function;"
+        cmd = self.interpreter + " -c '"
         cmd += "import ctypes;"
         cmd += "libc = ctypes.cdll.LoadLibrary(\"libc.so.1\");"
         cmd += "print(libc.time(None))'"