support/test/cpio: test for pv already done by listing the cpio archive

Since we do not pivot_root/switch_root from the cpio, whatever we get
in the rootfs was exactly what we got by listing the cpio archive.

Drop the test for the presence of pv, it's redundant.

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Cc: Thierry Bultel <thierry.bultel@linatsea.fr>
Cc: Adam Duskett <aduskett@gmail.com>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>

support/testing/tests/fs/test_cpio.py

@@ -57,10 +57,6 @@ class TestCpioDracutBase(infra.basetest.BRTest):
                              self.builddir)
         self.assertEqual(exit_code, 0)
 
-        # No pivot_root is done, so pv shouldn't be there
-        _, exit_code = self.emulator.run("ls -l /usr/bin/pv")
-        self.assertNotEqual(exit_code, 0)
-
 
 class TestCpioDracutUclibc(TestCpioDracutBase):
     config = TestCpioDracutBase.config + \