FIR2IR: eliminate hacky replacement for invoke() & next() calls

At this moment the generic logic for fake override calls
replacement is in use.

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrVisitor.kt

@@ -18,7 +18,6 @@ import org.jetbrains.kotlin.fir.expressions.impl.FirUnitExpression
 import org.jetbrains.kotlin.fir.references.FirReference
 import org.jetbrains.kotlin.fir.references.FirResolvedNamedReference
 import org.jetbrains.kotlin.fir.references.FirSuperReference
-import org.jetbrains.kotlin.fir.references.builder.buildResolvedNamedReference
 import org.jetbrains.kotlin.fir.references.impl.FirPropertyFromParameterResolvedNamedReference
 import org.jetbrains.kotlin.fir.resolve.*
 import org.jetbrains.kotlin.fir.resolve.calls.SyntheticPropertySymbol
@@ -687,12 +686,7 @@ class Fir2IrVisitor(
         val convertibleCall = if (functionCall.toResolvedCallableSymbol()?.fir is FirIntegerOperator) {
             functionCall.copy().transformSingle(integerApproximator, null)
         } else {
-            val resolvedSymbol = functionCall.resolvedNamedFunctionSymbol()
-            if (resolvedSymbol != null) {
-                functionCall.replaceCalleeReferenceWithOverridden(resolvedSymbol)
-            } else {
-                functionCall
-            }
+            functionCall
         }
         return convertibleCall.toIrExpression(convertibleCall.typeRef)
             .applyCallArguments(convertibleCall).applyTypeArguments(convertibleCall).applyReceivers(convertibleCall)
@@ -703,21 +697,6 @@ class Fir2IrVisitor(
         return calleeReference.resolvedSymbol as? FirNamedFunctionSymbol
     }
 
-    // Use the generic invoke & next methods to match bridges generated by the backend.
-    private fun FirFunctionCall.replaceCalleeReferenceWithOverridden(resolvedSymbol: FirNamedFunctionSymbol): FirFunctionCall {
-        val overriddenSymbol = resolvedSymbol.overriddenSymbol ?: return this
-        if (resolvedSymbol.callableId.isInvoke() || resolvedSymbol.callableId.isIteratorNext()) {
-            return copy(
-                calleeReference = buildResolvedNamedReference {
-                    source = calleeReference.source
-                    name = calleeReference.name
-                    this.resolvedSymbol = overriddenSymbol
-                }
-            )
-        }
-        return this
-    }
-
     override fun visitAnnotationCall(annotationCall: FirAnnotationCall, data: Any?): IrElement {
         return annotationCall.toIrExpression().applyCallArguments(annotationCall)
     }