diff --git a/installation_and_upgrade/update_release.sh b/installation_and_upgrade/update_release.sh
deleted file mode 100644
index 0527b6f..0000000
--- a/installation_and_upgrade/update_release.sh
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/bin/sh
-
-# this is the package we are adding or changing version of
-PACKAGE_MACRO='MOTOR'
-
-# path to package - need to escape any $ in this path
-PACKAGE_PATH='\$(SUPPORT)/motor/R6-9'
-
-# this is only used for adding a new package
-PACKAGE_AFTER='ZLIB'
-
-## this changes the version of a package
-find . -name RELEASE -exec sed -i -e "s%^${PACKAGE_MACRO}[ ]*=.*%${PACKAGE_MACRO}=${PACKAGE_PATH}%" {} \;
-
-## this adds a new package
-#find . -name RELEASE -exec sed -i -e "s%^${PACKAGE_AFTER}[ ]*=%${PACKAGE_MACRO}=${PACKAGE_PATH}\n${PACKAGE_AFTER}=%" {} \;