asciidoc: drop distutils inherit, not actually required

(From OE-Core rev: 15373057c3a87e247f0b3bcdc71bed7d6d3092e6)

Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/asciidoc/asciidoc_8.6.9.bb

@@ -14,7 +14,7 @@ SRC_URI[sha256sum] = "78db9d0567c8ab6570a6eff7ffdf84eadd91f2dfc0a92a2d0105d323ca
 
 UPSTREAM_CHECK_URI = "https://sourceforge.net/projects/asciidoc/files/"
 
-inherit distutils autotools-brokensep
+inherit autotools-brokensep
 
 export DESTDIR = "${D}"
 DEPENDS_class-native = "docbook-xml-dtd4-native"