arm-autonomy/wic: Revert Introduce empty plugin to create unformatted empty partitions

This reverts commit bc07e6c62a.

Wic empty plugin upstreamed to oe-core as: 77d174fc80663403ef76c5b808aafc1117d3545c.

Change-Id: I94e6fb8583cf6e26cf141087fe5adb187ea85ef1
Issue-Id: SCM-1520
Signed-off-by: Diego Sueiro <diego.sueiro@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>

meta-arm-autonomy/scripts/lib/wic/plugins/source/empty.py

@@ -1,32 +0,0 @@
-#
-# SPDX-License-Identifier: MIT
-#
-
-# The empty wic plugin is used to create unformatted empty partitions for wic
-# images.
-# To use it you must pass "empty" as argument for the "--source" parameter in
-# the wks file. For example:
-# part foo --source empty --ondisk sda --size="1024" --align 1024
-
-import logging
-
-from wic.pluginbase import SourcePlugin
-
-logger = logging.getLogger('wic')
-
-class EmptyPartitionPlugin(SourcePlugin):
-    """
-    Populate unformatted empty partition.
-    """
-
-    name = 'empty'
-
-    @classmethod
-    def do_prepare_partition(cls, part, source_params, cr, cr_workdir,
-                             oe_builddir, bootimg_dir, kernel_dir,
-                             rootfs_dir, native_sysroot):
-        """
-        Called to do the actual content population for a partition i.e. it
-        'prepares' the partition to be incorporated into the image.
-        """
-        return