libx11-diet: Fix bug 1050

libx11-diet: Fix bug 1050

[YOCTO #1050]
I got do_compile failure during building qemux86 image
| ../../../doltlibtool: line 17:
/distro/dcui/0704/pc1/build/tmp/work/i586-poky-linux/libx11-diet-1.3-r2/libX11-1.3/modules/im/ximcp/../../../libtool:
No such file or directory

This is due to not found libtool, but i586-poky-linux-libtool in libX11-1.3
So I disable dolt for solving this problem.

(From OE-Core rev: 710ad20f005cb96a6aabf3f0eb184a254ada1610)

Signed-off-by: Xiaofeng Yan <xiaofeng.yan@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>