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>
diff --git a/.gitmodules b/.gitmodules
index d1d558b..0880230 100644
--- a/.gitmodules
+++ b/.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
diff --git a/tools/kirk b/tools/kirk
new file mode 160000
index 0000000..7e397fe
--- /dev/null
+++ b/tools/kirk
@@ -0,0 +1 @@
+Subproject commit 7e397fe1a2d34a100c7dbfa452bd5d86ca1ddb77
diff --git a/tools/runltp-ng b/tools/runltp-ng
deleted file mode 160000
index e842511..0000000
--- a/tools/runltp-ng
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit e842511ed2c680e3b2ea6dec790913a41d5ed937