Further ProcessBuilder tweaks.

 - Test ProcessBuilder.inheritIO() setter.
 - Test ProcessBuilder.command() setters and getter.
 - Test ProcessBuilder.directory() setter and getter.
 - Clean up dead code that was accidentally committed.

Tested:
   cts-tradefed run cts -c libcore.java.lang.ProcessBuilderTest

Change-Id: Ifa85bad62db7b18a772b7f5c054bf9afb71144f0
1 file changed