test/py: Drop importing utils as util

Now that we have a shorter name, we don't need this sort of thing.
Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> # test_android
diff --git a/test/py/tests/fit_util.py b/test/py/tests/fit_util.py
index 22b9711..f322b50 100644
--- a/test/py/tests/fit_util.py
+++ b/test/py/tests/fit_util.py
@@ -5,7 +5,7 @@
 
 import os
 
-import utils as util
+import utils
 
 def make_fname(ubman, basename):
     """Make a temporary filename
@@ -54,7 +54,7 @@
     """
     fit = make_fname(ubman, basename)
     its = make_its(ubman, base_its, params)
-    util.run_and_log(ubman, [mkimage, '-f', its, fit])
+    utils.run_and_log(ubman, [mkimage, '-f', its, fit])
     if base_fdt:
         with open(make_fname(ubman, 'u-boot.dts'), 'w') as fd:
             fd.write(base_fdt)
@@ -89,5 +89,5 @@
     dtb = make_fname(ubman, f'{basename}.dtb')
     with open(src, 'w', encoding='utf-8') as outf:
         outf.write(base_fdt)
-    util.run_and_log(ubman, ['dtc', src, '-O', 'dtb', '-o', dtb])
+    utils.run_and_log(ubman, ['dtc', src, '-O', 'dtb', '-o', dtb])
     return dtb