Refactor/clean HA tests

Cleanup leadership tests
Remove in-memory tests(no longer exist in onos)

Change-Id: Ib08fb33773232140f51fd144e9b0eaa6912ae0f8
diff --git a/TestON/tests/HAsingleInstanceRestart/HAsingleInstanceRestart.params b/TestON/tests/HAsingleInstanceRestart/HAsingleInstanceRestart.params
index 990bef4..d7014e4 100644
--- a/TestON/tests/HAsingleInstanceRestart/HAsingleInstanceRestart.params
+++ b/TestON/tests/HAsingleInstanceRestart/HAsingleInstanceRestart.params
@@ -15,9 +15,7 @@
     #CASE14: start election app on all onos nodes
     #CASE15: Check that Leadership Election is still functional
     <testcases>1,2,8,3,4,5,14,15,16,17,[6],8,3,7,4,15,17,9,8,4,10,8,4,11,8,4,12,8,4,13</testcases>
-    <imports>
-        <path> /home/admin/OnosSystemTest/TestON/tests/HAsingleInstanceRestart/dependencies/ </path>
-    </imports>
+
     <ENV>
         <cellName>HA</cellName>
         <appString>drivers,openflow,proxyarp,mobility</appString>