wic: move 2 APIs to wic.engine

Moved find_canned and get_custom_config APIs to engine module.
Removed empty wic.utils.misc module.

[YOCTO #10619]

(From OE-Core rev: 10e9afac46575d3f557b7cb505daa31ce9ce85fa)

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

scripts/lib/wic/utils/misc.py

@@ -1,56 +0,0 @@
-#!/usr/bin/env python -tt
-#
-# Copyright (c) 2010, 2011 Intel Inc.
-#
-# This program is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License as published by the Free
-# Software Foundation; version 2 of the License
-#
-# This program is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-# for more details.
-#
-# You should have received a copy of the GNU General Public License along
-# with this program; if not, write to the Free Software Foundation, Inc., 59
-# Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
-import os
-import time
-import wic.engine
-
-def find_canned(scripts_path, file_name):
-    """
-    Find a file either by its path or by name in the canned files dir.
-
-    Return None if not found
-    """
-    if os.path.exists(file_name):
-        return file_name
-
-    layers_canned_wks_dir = wic.engine.build_canned_image_list(scripts_path)
-    for canned_wks_dir in layers_canned_wks_dir:
-        for root, dirs, files in os.walk(canned_wks_dir):
-            for fname in files:
-                if fname == file_name:
-                    fullpath = os.path.join(canned_wks_dir, fname)
-                    return fullpath
-
-def get_custom_config(boot_file):
-    """
-    Get the custom configuration to be used for the bootloader.
-
-    Return None if the file can't be found.
-    """
-    scripts_path = os.path.abspath(os.path.dirname(__file__))
-    # Get the scripts path of poky
-    for x in range(0, 3):
-        scripts_path = os.path.dirname(scripts_path)
-
-    cfg_file = find_canned(scripts_path, boot_file)
-    if cfg_file:
-        with open(cfg_file, "r") as f:
-            config = f.read()
-        return config
-
-    return None