Remove unnecessary exports of HOST_SYS and BUILD_SYS in python-based recipes

They are no longer required to build python software.

Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

meta-python/recipes-devtools/python/python-matplotlib_1.1.0.bb

@@ -19,15 +19,12 @@ EXTRA_OECONF = "--disable-docs --with-python-includes=${STAGING_INCDIR}/../"
 inherit distutils
 
 do_compile_prepend() {
-    BUILD_SYS=${BUILD_SYS} HOST_SYS=${HOST_SYS} \
     ${STAGING_BINDIR_NATIVE}/python setup.py build ${DISTUTILS_BUILD_ARGS} || \
     true
 }
 
 # need to export these variables for python-config to work
 export PYTHONPATH
-export BUILD_SYS
-export HOST_SYS
 export STAGING_INCDIR
 export STAGING_LIBDIR
 

meta-python/recipes-devtools/python/python-six.inc

@@ -6,7 +6,6 @@ SRC_URI[md5sum] = "34eed507548117b2ab523ab14b2f8b55"
 SRC_URI[sha256sum] = "105f8d68616f8248e24bf0e9372ef04d3cc10104f1980f54d57b2ce73a5ad56a"
 
 do_compile_append() {
-    export BUILD_SYS=${BUILD_SYS} HOST_SYS=${HOST_SYS}
     ${PYTHON} setup.py -q bdist_egg --dist-dir ./
 }
 do_install_append() {

meta-python/recipes-devtools/python/python-vcversioner_2.14.0.0.bb

@@ -10,7 +10,6 @@ SRC_URI[sha256sum] = "acd43686e92e6c8bbeb4f2eef54408567a7adea9692fa72d591eec5357
 inherit pypi setuptools
 
 do_compile_append() {
-    export BUILD_SYS=${BUILD_SYS} HOST_SYS=${HOST_SYS}
     ${PYTHON} setup.py -q bdist_egg --dist-dir ./
 }