Reverting a WIP code WAS: hg: kulla/dev/langtools: 8085882: JShell tool: Completion for primitive types

[ShinyaYoshida]

Hi Jan,
I notice that I included a WIP code in the previous commit. I must
apologize.
Could or should I make the code revert?

Reverting commit will be:
Commit message: Revert WIP code in
http://hg.openjdk.java.net/kulla/dev/langtools/rev/7c748bccd597
webrev: http://cr.openjdk.java.net/~shinyafox/kulla/8085882/webrev.02/

Regards,
shinyafox(Shinya Yoshida)