local.conf.sample.extended: remove help2man reference

help2man isn't part of the early build anymore, so there's no point in
referring to it here.

(From meta-yocto rev: c601f5bd5ddfe8e8be709a4541b95c772a0d3b6f)

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

meta-poky/conf/local.conf.sample.extended

@@ -124,9 +124,6 @@ DISTRO_FEATURES_remove = "x11"
 #This enable mklibs library size optimization will be for all the images.
 #MKLIBS_OPTIMIZED_IMAGES ?= "all"
 
-# Uncomment this if your host distribution provides the help2man tool.
-#ASSUME_PROVIDED += "help2man-native"
-
 # This value is currently used by pseudo to determine if the recipe should
 # build both the 32-bit and 64-bit wrapper libraries on a 64-bit build system.
 #