Code cleanup: get rid of unnecessary !! / as, fake warning comments and issues

compiler/frontend/src/org/jetbrains/kotlin/cfg/pseudocode/instructions/eval/accessInstructions.kt

@@ -103,6 +103,7 @@ public class WriteValueInstruction(
         public val rValue: PseudoValue
 ) : AccessValueInstruction(assignment, lexicalScope, target, receiverValues) {
     override val inputValues: List<PseudoValue>
+        // as is necessary: see KT-10384
         get() = (receiverValues.keySet() as Collection<PseudoValue>) + rValue
 
     override fun accept(visitor: InstructionVisitor) {

compiler/frontend/src/org/jetbrains/kotlin/cfg/pseudocode/instructions/eval/operationInstructions.kt

@@ -60,6 +60,8 @@ public class CallInstruction private constructor(
         override val receiverValues: Map<PseudoValue, ReceiverValue>,
         public val arguments: Map<PseudoValue, ValueParameterDescriptor>
 ) : OperationInstruction(element, lexicalScope, (receiverValues.keySet() as Collection<PseudoValue>) + arguments.keySet()), InstructionWithReceivers {
+    // as is necessary above: see KT-10384
+
     public constructor (
             element: KtElement,
             lexicalScope: LexicalScope,