'kotlinCompiler' test is deleted because it's a very roundabout way to compile
Kotlin and Java sources, and there's no point in testing it.
'javacCompiler' test is deleted for similar reasons: using javac's "compiler"
option is not an advertised way to use Kotlin Ant task, and anyway it will work
with any CompilerAdapter instance, so it's hard to break it (apart from
deleting "withKotlin" adapter).
There are tests which check compilation/running of the same code but with the
recommended method. The pretext for deletion of these tests is to make Ant
tests generated, and that would be easier if they wouldn't depend on any outer
variables
Alexander Udalov
89408f45bb