** Summary changed:

- upgrade from 17.10 to 18.04 - apt-clone crashed with SystemError in commit(): 
installArchives() failed
+ UIFE - remove ubiquity upgrade option

** Description changed:

+ [Rationale]
+ The ubiquity upgrade option, which allows one to upgrade an old release
+ of Ubuntu using ubiquity, is crashing when attempting to restore the
+ installed packages. Digging into the matter we discovered that there are
+ a multitude of reports where the upgrade crashes due to a failure to
+ calculate the upgrade and this leaves users in a state from which it is
+ hard to recover. Additionally, there have been few crashes reported
+ about this process which leads us to believe it is not used frequently.
+ Original Description
+ --------------------
  Test Case:
  1. Install 17.10 and apply all updates
  2. boot the ISO of Ubuntu Desktop 18.04
  3. Launch the install and in the partitioning step, select Upgrade from 17.10 
to 18.04
  4. Proceed with the rest of the installation
  Expected result
  The system upgrades successfully to 18.04
  Actual result
  This crash
- ProblemType: Crash
- DistroRelease: Ubuntu 18.04
+ ProblemType: CrashDistroRelease: Ubuntu 18.04
  Package: apt-clone 0.4.1ubuntu2
  ProcVersionSignature: Ubuntu 4.15.0-12.13-generic 4.15.7
  Uname: Linux 4.15.0-12-generic x86_64
  ApportVersion: 2.20.8-0ubuntu10
  Architecture: amd64
  CasperVersion: 1.389
  Date: Mon Mar 19 12:59:14 2018
  ExecutablePath: /usr/bin/apt-clone
  InterpreterPath: /usr/bin/python3.6
  LiveMediaBuild: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180317)
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python3 /usr/bin/apt-clone restore-new-distro 
/target/ubiquity-apt-clone/apt-clone-state-hostname.tar.gz bionic --destination 
  Python3Details: /usr/bin/python3.6, Python 3.6.5rc1, python3-minimal, 3.6.4-1
  PythonArgs: ['/usr/bin/apt-clone', 'restore-new-distro', 
'/target/ubiquity-apt-clone/apt-clone-state-hostname.tar.gz', 'bionic', 
'--destination', '/target']
- PythonDetails: /usr/bin/python2.7, Python 2.7.14+, python-minimal, 2.7.14-4
- SourcePackage: apt-clone
+ PythonDetails: /usr/bin/python2.7, Python 2.7.14+, python-minimal, 
2.7.14-4SourcePackage: apt-clone
  Title: apt-clone crashed with SystemError in commit(): installArchives() 
  UpgradeStatus: No upgrade log present (probably fresh install)

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  UIFE - remove ubiquity upgrade option

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