Java VM warning message upon starting Tomcat application server relating to PermSize and MaxPermSize

Issue:

Upon starting up the Tomcat application server by running statup.bat, the following warning message appears:

Java HotSpot 64-Bit Server VM warning: ignoring option PermSize=32m; support was removed in 8.0

What is the reason for this and how to resolve this warning message ?

The TIBCO JasperReports^® Server 6.3 Installation guide contains references to setting PermSize and MaxPermSize such as :

set JAVA_OPTS=%JAVA_OPTS% -Xms1024m -Xmx2048m -XX:PermSize=32m

But when using JDK 8, PermSize and MaxPermSize are no longer required. If used on the command line a warning will be emitted for each:

Java HotSpot Server VM warning: ignoring option PermSize=32m; support was removed in 8.0

Java HotSpot Server VM warning: ignoring option MaxPermSize=128m; support was removed in 8.0