meta-openembedded and poky: subtree updates

Squash of the following due to dependencies among them
and OpenBMC changes:

meta-openembedded: subtree update:d0748372d2..9201611135
meta-openembedded: subtree update:9201611135..17fd382f34
poky: subtree update:9052e5b32a..2e11d97b6c
poky: subtree update:2e11d97b6c..a8544811d7

The change log was too large for the jenkins plugin
to handle therefore it has been removed. Here is
the first and last commit of each subtree:

meta-openembedded:d0748372d2
      cppzmq: bump to version 4.6.0
meta-openembedded:17fd382f34
      mpv: Remove X11 dependency
poky:9052e5b32a
      package_ipk: Remove pointless comment to trigger rebuild
poky:a8544811d7
      pbzip2: Fix license warning

Change-Id: If0fc6c37629642ee207a4ca2f7aa501a2c673cd6
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/poky/bitbake/lib/toaster/bldcontrol/bbcontroller.py b/poky/bitbake/lib/toaster/bldcontrol/bbcontroller.py
index 301df18..71c288d 100644
--- a/poky/bitbake/lib/toaster/bldcontrol/bbcontroller.py
+++ b/poky/bitbake/lib/toaster/bldcontrol/bbcontroller.py
@@ -8,10 +8,8 @@
 
 import os
 import sys
-import re
-from django.db import transaction
 from django.db.models import Q
-from bldcontrol.models import BuildEnvironment, BRLayer, BRVariable, BRTarget, BRBitbake
+from bldcontrol.models import BuildEnvironment, BRLayer, BRBitbake
 
 # load Bitbake components
 path = os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))