RFR : JDK-8215599 : Remove support for javadoc "frames" mode

[Priya Lakshmi Muthuswamy]

Hi,

Kindly review the changes for removal of frames.
Removed the script for setting window title which was needed for frames 
and also the boolean includeScript,
which was false for overview-frame,allclasses-frame and package-frame 
and true for all other cases.

JBS: https://bugs.openjdk.java.net/browse/JDK-8215599
webrev: http://cr.openjdk.java.net/~pmuthuswamy/8215599/webrev.00/
CSR: https://bugs.openjdk.java.net/browse/JDK-8215603

Thanks,
Priya