Fir2Ir: remove error reporting on no receiver

this error is not valid for scripts, where some receivers are set
later in the lowering, and it looks like in other cases this problem
will be detected later in lowering or codegen anyway.

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/CallAndReferenceGenerator.kt

@@ -1111,11 +1111,6 @@ class CallAndReferenceGenerator(
         return firReceiver.takeIf { it !is FirNoReceiverExpression }
             ?.let { visitor.convertToIrReceiverExpression(it, calleeReference, this as? FirCallableReferenceAccess) }
             ?: explicitReceiverExpression
-            ?: run {
-                if (this is FirCallableReferenceAccess) return null
-                val name = if (isDispatch) "Dispatch" else "Extension"
-                error("$name receiver expected: ${render()} to ${calleeReference.render()}")
-            }
     }
 
     private fun IrExpression.applyReceivers(

compiler/testData/codegen/script/topLevelLocalDelegatedProperty.kts

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_K2: JVM_IR
 
 import kotlin.reflect.KProperty
 

compiler/testData/codegen/script/topLevelPropertiesWithGetSet.kts

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_K2: JVM_IR
 
 var log = "begin"
 fun append(msg: String) {