wic: code cleanup

Fixed indentation, unused imports, trailing lines etc.

[YOCTO #10619]

(From OE-Core rev: 5fa7768bfb4b6d464c6a812822b0665f52e7bea4)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/lib/wic/plugins/source/bootimg-partition.py

@@ -26,10 +26,11 @@
 import os
 import re
 
+from glob import glob
+
 from wic import msger
 from wic.pluginbase import SourcePlugin
 from wic.utils.misc import exec_cmd, get_bitbake_var
-from glob import glob
 
 class BootimgPartitionPlugin(SourcePlugin):
     """
@@ -137,4 +138,3 @@ class BootimgPartitionPlugin(SourcePlugin):
         msger.debug('Prepare boot partition using rootfs in %s' % (hdddir))
         part.prepare_rootfs(cr_workdir, oe_builddir, hdddir,
                             native_sysroot)
-