Remove Python 2.6

*** 30,64 ****
  PROG=coverage
  VER=4.2
  SUMMARY="Code coverage measurement for Python"
  DESC="$SUMMARY"
  
! # Pardon the copy/paste, but we have to do this twice (2.6 & 2.7) for now.
! # And the only way buildctl detects packages is by grepping for PKG assignment.
! 
! OLDPV=$PYTHONVER
! 
! set_python_version 2.6
  XFORM_ARGS="-D PYTHONVER=$PYTHONVER"
- RUN_DEPENDS_IPS="runtime/python-26"
- PKG=library/python-2/coverage-26
- init
- download_source $PROG $PROG $VER
- patch_source
- prep_build
- python_build
- make_package
- clean_up
- 
- set_python_version 2.7
- XFORM_ARGS="-D PYTHONVER=$PYTHONVER"
  RUN_DEPENDS_IPS="runtime/python-27"
  PKG=library/python-2/coverage-27
  init
  download_source $PROG $PROG $VER
  patch_source
  prep_build
  python_build
  make_package
  clean_up
- 
- set_python_version $OLDPV
--- 30,47 ----
  PROG=coverage
  VER=4.2
  SUMMARY="Code coverage measurement for Python"
  DESC="$SUMMARY"
  
! # In the future when we upgrade python again, be sure to wrap the following
! # around with set_python_version and reassign PKG and RUN_DEPENDS_IPS.
! # The only way buildctl detects packages is by grepping for PKG assignment.
  XFORM_ARGS="-D PYTHONVER=$PYTHONVER"
  RUN_DEPENDS_IPS="runtime/python-27"
  PKG=library/python-2/coverage-27
  init
  download_source $PROG $PROG $VER
  patch_source
  prep_build
  python_build
  make_package
  clean_up