wic: Remove unused plugin and error code

wic doesn't use it, so remove it.

(From OE-Core rev: b818e5a1ed047940fda533da73fc50a099e1aa3f)

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/lib/mic/utils/errors.py

@@ -43,29 +43,8 @@ class Usage(CreatorError):
 class Abort(CreatorError):
     keyword = ''
 
-class ConfigError(CreatorError):
-    keyword = '<config>'
-
 class KsError(CreatorError):
     keyword = '<kickstart>'
 
-class RepoError(CreatorError):
-    keyword = '<repo>'
-
-class RpmError(CreatorError):
-    keyword = '<rpm>'
-
 class MountError(CreatorError):
     keyword = '<mount>'
-
-class SnapshotError(CreatorError):
-    keyword = '<snapshot>'
-
-class SquashfsError(CreatorError):
-    keyword = '<squashfs>'
-
-class BootstrapError(CreatorError):
-    keyword = '<bootstrap>'
-
-class RuntimeError(CreatorError):
-    keyword = '<runtime>'