python: drop python-backports-lzma

Now that we are python 3.3+ only, we no longer need this backport.

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>

recipes-devtools/python/python-backports-lzma/fix_paths.patch

@@ -1,17 +0,0 @@
----
- setup.py |    4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
-
---- a/setup.py
-+++ b/setup.py
-@@ -32,8 +32,8 @@
- extens = [Extension('backports/lzma/_lzma',
-                     ['backports/lzma/_lzmamodule.c'],
-                     libraries = ['lzma'],
--                    include_dirs = [os.path.join(home, 'include'), '/opt/local/include', '/usr/local/include'],
--                    library_dirs = [os.path.join(home, 'lib'), '/opt/local/lib', '/usr/local/lib']
-+                    include_dirs = [],
-+                    library_dirs = []
-                     )]
- 
- descr = "Backport of Python 3.3's 'lzma' module for XZ/LZMA compressed files."

recipes-devtools/python/python-backports-lzma_0.0.3.bb

@@ -1,32 +0,0 @@
-HOMEPAGE = "https://github.com/peterjc/backports.lzma"
-SUMMARY = "\
-  Backport of Python 3.3's 'lzma' module for XZ/LZMA compressed files."
-DESCRIPTION = "\
-  This is a backport of the 'lzma' module included in Python 3.3 or later \
-  by Nadeem Vawda and Per Oyvind Karlsen, which provides a Python wrapper \
-  for XZ Utils (aka LZMA Utils v2) by Igor Pavlov. \
-  . \
-  In order to compile this, you will need to install XZ Utils from \
-  http://tukaani.org/xz/ \
-  "
-SECTION = "devel/python"
-LICENSE = "BSD"
-LIC_FILES_CHKSUM = "file://PKG-INFO;md5=db4345b3b9524aabc8fe8c65f235c6b2"
-
-SRC_URI[md5sum] = "c3d109746aefa86268e500c07d7e8e0f"
-SRC_URI[sha256sum] = "bac58aec8d39ac3d22250840fb24830d0e4a0ef05ad8f3f09172dc0cc80cdbca"
-
-S = "${WORKDIR}/${SRCNAME}-${PV}"
-
-inherit setuptools
-
-DEPENDS += "xz"
-
-SRCNAME = "backports.lzma"
-
-FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
-
-SRC_URI = "\
-	https://pypi.python.org/packages/source/b/backports.lzma/${SRCNAME}-${PV}.tar.gz \
-	file://fix_paths.patch \
-	"