Now installer does not call service tag, see JDK-8000141.
As expected jre7/lib/servicetag/registration.xml file is not created but there are still:
jre7/lib/servicetag
jre7/lib/servicetag/jdk_header.png

I believe that servicetag folder should be removed.

Steps to reproduce:
1. Install JRE/JDK 7u21 b03
Expected:
No service tag
Actual:
jre7/lib/servicetag
jre7/lib/servicetag/jdk_header.png
in case of JDK:
jdk1.7.0_21/jre/lib/servicetag
jdk1.7.0_21/jre/lib/servicetag/jdk_header.png