RFR: 8023146: Sjavac test failes in langtools nightly

[Erik Joelsson]

In JDK-8015145, I converted the test for sjavac into a jtreg test. This 
proved to be a mistake. Since sjavac isn't being shipped with the 
product, tests for it can't be included in the regression testsuite as 
they will not even compile when run against a product build.

I propose to remove the jtreg declaration from this test to make it stop 
failing. This is just reverting what I did in the previous change.

http://cr.openjdk.java.net/~erikj/8023146/webrev.langtools.01/

/Erik