Replace runltp-ng with kirk framework

Kirk application is the runltp-ng successor and it aims to merge
multiple Linux testing frameworks in one tool, providing support
for remote testing via Qemu, SSH, LTX, parallel execution and much
more.

This patch removes runltp-ng, which is now replaced by kirk. All
runltp-ng features are present in kirk and even more.

Acked-by: Richard Palethorpe <rpalethorpe@suse.com>
Reviewed-by: Petr Vorel <pvorel@suse.cz>
Reviewed-by: Cyril Hrubis <chrubis@suse.cz>
Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>

Author: acerv

.gitmodules

@@ -4,6 +4,6 @@
 [submodule "tools/sparse/sparse-src"]
 	path = tools/sparse/sparse-src
 	url = git://git.kernel.org/pub/scm/devel/sparse/sparse.git
-[submodule "tools/runltp-ng"]
-	path = tools/runltp-ng
-	url = https://github.com/linux-test-project/runltp-ng.git
+[submodule "tools/kirk"]
+	path = tools/kirk
+	url = https://github.com/linux-test-project/kirk.git