Revert "Update Joomla Instance Part: add md5sum for instance.cfg"

This reverts commit 1c8b2d80.

software/joomla/software.cfg

@@ -26,7 +26,8 @@ module = lamp.simple
 # Default template for the instance.
 recipe = slapos.recipe.template
 url = ${:_profile_base_location_}/instance.cfg
-md5sum = 0b28438c3da1934d36ced9764fe3a98d
+#${:_profile_base_location_}/instance.cfg
+#md5sum = Student shall put md5 of instance.cfg here
 output = ${buildout:directory}/template.cfg
 mode = 0644
 
@@ -127,4 +128,3 @@ download-cache = ${buildout:directory}/downloads
 command = [ -d ${:download-cache} ] && rm -fr ${:download-cache}/* || exit 0
 update-command = ${:command}
 stop-on-error = True
-