[PATCH] utils: Use rm -rf in remove()

[Richard Purdie <richard.purdie@linuxfoundation.org>]

Whilst shutils.rmtree() is pythonic, its also slow. Its faster to
use rm -rf which makes optimal use of the right syscalls.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
diff --git a/bitbake/lib/bb/utils.py b/bitbake/lib/bb/utils.py
index 484fb2d..94ef447 100644
--- a/bitbake/lib/bb/utils.py
+++ b/bitbake/lib/bb/utils.py
@@ -533,13 +533,15 @@ def remove(path, recurse=False):
     """Equivalent to rm -f or rm -rf"""
     if not path:
         return
-    import os, errno, shutil, glob
+    import os, errno, glob, subprocess
     for name in glob.glob(path):
         try:
             os.unlink(name)
         except OSError as exc:
             if recurse and exc.errno == errno.EISDIR:
-                shutil.rmtree(name)
+                # shutil.rmtree(name) would be ideal but its too slow
+                subprocess.call('rm -rf %s' % path, shell=True)
+                return
             elif exc.errno != errno.ENOENT:
                 raise