RFR (XXS): 8140776: CompilerControl: Remove UTF-16 from the tests

[Pavel Punegov]

Hi,

Please review the fix that excludes Unicode method generation in 
Compiler Control.

There are a lots of failures in the Nightly caused by these strings. I 
was unable to reproduce them, so the real reason is unknown.
The fix is to remove this generation until the reason isn't found.

webrev: http://cr.openjdk.java.net/~ppunegov/8140776/webrev.00/
bug: https://bugs.openjdk.java.net/browse/JDK-8140776

-- 
Thanks,
Pavel Punegov