Fix jenkins script for removing database file

Change-Id: Id9a22c49f5e66ef77b521e9c6b108d70ab8bac52
diff --git a/TestON/JenkinsFile/dependencies/PerformanceFuncs.groovy b/TestON/JenkinsFile/dependencies/PerformanceFuncs.groovy
index 1623373..7c3e0f8 100644
--- a/TestON/JenkinsFile/dependencies/PerformanceFuncs.groovy
+++ b/TestON/JenkinsFile/dependencies/PerformanceFuncs.groovy
@@ -341,7 +341,7 @@
 
 def cleanupDatabaseFile( testName ){
     // clean up the database file created under /tmp
-    return 'rm /tmp/' + SCPF[ testName ][ 'file' ]
+    return 'rm -f /tmp/' + SCPF[ testName ][ 'file' ]
 }
 
 def databasePart( testName, database_command ){