Remove a number of unneeded import os/bb calls

The bb and os modules are always imported so having these extra import calls
are a waste of space/execution time. They also set a bad example for people
copy and pasting code so clean them up.

(From OE-Core rev: 7d674820958be3a7051ea619effe1a6061d9cbe2)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-graphics/directfb/directfb.inc

@@ -35,7 +35,6 @@ EXTRA_OECONF = "\
 #PACKAGES_DYNAMIC = "directfb-inputdrivers-*"
 #
 #python populate_packages_prepend () {
-#    import os.path
 #    inputdrivers_libdir = d.expand('${libdir}/directfb-${RV}/inputdrivers')
 #    do_split_packages(d, inputdrivers_libdir, '*.so$', 'directfb-inputdrivers-%s', 'Directfb plugin for %s')
 #}

meta/recipes-graphics/mesa/mesa-dri.inc

@@ -11,8 +11,6 @@ DRIDRIVERS_append_x86-64 = ",i915,i965"
 EXTRA_OECONF += "--with-driver=dri --disable-egl --disable-gallium --without-gallium-drivers --with-dri-drivers=${DRIDRIVERS}"
 
 python populate_packages_prepend() {
-    import os.path
-
     dri_drivers_root = os.path.join(d.getVar('libdir', True), "dri")
 
     do_split_packages(d, dri_drivers_root, '^(.*)_dri\.so$', 'mesa-dri-driver-%s', 'Mesa %s DRI driver', extra_depends='')