clean up var-DISTUTILS_INSTALL_ARGS

Since the following commit applied in oe-core
...
21f0c5a distutils/setuptools, distutils3/setuptools3: improve reproducibility
...
It unified var-DISTUTILS_INSTALL_ARGS in distutils and setuptools,
so clean up the duplicated var-DISTUTILS_INSTALL_ARGS in each recipe.

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-devtools/python/python-distutils-extra.bb

@@ -2,8 +2,6 @@ require python-distutils-extra.inc
 
 inherit setuptools
 
-DISTUTILS_INSTALL_ARGS += "--install-lib=${libdir}/${PYTHON_DIR}/site-packages"
-
 RDEPENDS_${PN} = "\
     python-distutils \
 "

meta-oe/recipes-devtools/python/python3-distutils-extra.bb

@@ -4,8 +4,6 @@ inherit setuptools3
 
 S = "${WORKDIR}/python-distutils-extra-${PV}"
 
-DISTUTILS_INSTALL_ARGS += "--install-lib=${libdir}/${PYTHON_DIR}/site-packages"
-
 RDEPENDS_${PN} = "\
     python3-setuptools \
 "