[Native] Drop LLDB_TRACE test directive

This directive doesn't have a lot of meaning. It is always set this
way that we are getting text file with the same name as test file.

native/native.tests/testData/lldb/kt42208WithPassingLambdaToAnotherFunction.kt

@@ -1,6 +1,6 @@
 // KIND: STANDALONE_LLDB
 // FREE_COMPILER_ARGS: -XXLanguage:+UnitConversionsOnArbitraryExpressions
-// LLDB_TRACE: kt42208WithPassingLambdaToAnotherFunction.txt
+
 // FILE: kt42208-1.kt
 fun main() {
     val a = foo()