[Test] Disable UNUSED_* diagnostics in tests which are not belong to contolFlowAnalysis suite

compiler/testData/diagnostics/tests/smartCasts/inference/dependentOnPrevArg.kt

@@ -1,7 +1,7 @@
 package a
 
-fun <T> foo(u: T, <!UNUSED_PARAMETER!>v<!>: T): T = u
+fun <T> foo(u: T, v: T): T = u
 
 fun test(s: String?) {
-    val <!UNUSED_VARIABLE!>r<!>: String = foo(s!!, <!DEBUG_INFO_SMARTCAST!>s<!>)
-}
+    val r: String = foo(s!!, <!DEBUG_INFO_SMARTCAST!>s<!>)
+}