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

compiler/testData/diagnostics/tests/inference/nestedCalls/nontrivialCallExpression.kt

@@ -1,10 +1,11 @@
+// FIR_IDENTICAL
 package a
 
 fun foo(l: List<Int>): Int = l.get(0)
 
 fun <T> emptyList(): List<T> = throw Exception()
 
-fun <T: Any> makeNullable(<!UNUSED_PARAMETER!>t<!>: T): T? = null
+fun <T: Any> makeNullable(t: T): T? = null
 
 fun bar(i: Int) = i
 fun bar(a: Any) = a
@@ -15,4 +16,4 @@ fun test(array: Array<Int>) {
     bar(foo(emptyList()) + foo(a.emptyList()))
 
     bar(makeNullable(foo(emptyList())) ?: 0)
-}
+}