Remove property which seems to be unused
diff --git a/build.properties b/build.properties
index cbc3226..958dda1 100644
--- a/build.properties
+++ b/build.properties
@@ -46,7 +46,6 @@
 
 ivy.minimum.javaversion=1.8
 debug.mode=on
-ivy.install.version=1.4.1
 ivy.api.reference=2.5.0
 
 #status=integration