webkitgtk: clean up Python variables

The cmake bbclass already sets the path to the correct Python for us,
and there appears to be no more scripts in the build which use 'python'
explicitly.

(From OE-Core rev: abbac1588163b63746928403d524a09532875d5a)

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-sato/webkit/webkitgtk_2.38.5.bb

@@ -70,20 +70,11 @@ PACKAGECONFIG[soup2] = "-DUSE_SOUP2=ON,-DUSE_SOUP2=OFF,libsoup-2.4,,,soup3"
 PACKAGECONFIG[soup3] = ",,libsoup,,,soup2"
 PACKAGECONFIG[journald] = "-DENABLE_JOURNALD_LOG=ON,-DENABLE_JOURNALD_LOG=OFF,systemd"
 
-# webkitgtk is full of /usr/bin/env python, particular for generating docs
-do_configure[postfuncs] += "setup_python_link"
-setup_python_link() {
-	if [ ! -e ${STAGING_BINDIR_NATIVE}/python ]; then
-		ln -s `which python3` ${STAGING_BINDIR_NATIVE}/python
-	fi
-}
-
 EXTRA_OECMAKE = " \
 		-DPORT=GTK \
 		${@bb.utils.contains('GI_DATA_ENABLED', 'True', '-DENABLE_INTROSPECTION=ON', '-DENABLE_INTROSPECTION=OFF', d)} \
 		${@bb.utils.contains('GIDOCGEN_ENABLED', 'True', '-DENABLE_DOCUMENTATION=ON', '-DENABLE_DOCUMENTATION=OFF', d)} \
 		-DENABLE_MINIBROWSER=ON \
-                -DPYTHON_EXECUTABLE=`which python3` \
                 -DENABLE_BUBBLEWRAP_SANDBOX=OFF \
                 -DENABLE_GAMEPAD=OFF \
 		"