[FIR] Drop transformExtensionReceiver and transformDispatchReceiver from FirQualifiedAccess

After removal of `StoreReceiver` transformers those methods are not used
  anymore, so it's ok to remove them at all

compiler/fir/tree/tree-generator/src/org/jetbrains/kotlin/fir/tree/generator/FieldSets.kt

@@ -26,8 +26,8 @@ object FieldSets {
     val receivers by lazy {
         fieldSet(
             field("explicitReceiver", expression, nullable = true, withReplace = true).withTransform(),
-            field("dispatchReceiver", expression, withReplace = true).withTransform(),
-            field("extensionReceiver", expression, withReplace = true).withTransform()
+            field("dispatchReceiver", expression, withReplace = true),
+            field("extensionReceiver", expression, withReplace = true)
         )
     }
 

compiler/fir/tree/tree-generator/src/org/jetbrains/kotlin/fir/tree/generator/NodeConfigurator.kt

@@ -232,6 +232,12 @@ object NodeConfigurator : AbstractFieldConfigurator<FirTreeBuilder>(FirTreeBuild
             +field("origin", functionCallOrigin)
         }
 
+        integerLiteralOperatorCall.configure {
+            // we need methods for transformation of receivers
+            +field("dispatchReceiver", expression, withReplace = true).withTransform()
+            +field("extensionReceiver", expression, withReplace = true).withTransform()
+        }
+
         comparisonExpression.configure {
             +field("operation", operationType)
             +field("compareToCall", functionCall)