Report UNUSED_PARAMETER on main parameter in 1.3+ #KT-26999 Fixed

compiler/testData/diagnostics/tests/inline/nonPublicMember/kt14887.kt

@@ -3,6 +3,6 @@
     <!UNRESOLVED_REFERENCE!>unresolved<!>().<!DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>another<!>()
 }
 
-fun main(args: Array<String>) {
+fun main() {
     foo()
 }

compiler/testData/diagnostics/tests/inline/nonPublicMember/kt14887.txt

@@ -1,4 +1,4 @@
 package
 
 public inline fun foo(): kotlin.Unit
-public fun main(/*0*/ args: kotlin.Array<kotlin.String>): kotlin.Unit
+public fun main(): kotlin.Unit