Minor. Move createFunctionType to core

As it will be used in the type mapper soon

compiler/resolution/src/org/jetbrains/kotlin/resolve/calls/util/functionTypeResolveUtils.kt

@@ -16,19 +16,16 @@
 
 package org.jetbrains.kotlin.resolve.calls.util
 
-import org.jetbrains.kotlin.builtins.KotlinBuiltIns
-import org.jetbrains.kotlin.builtins.getFunctionTypeArgumentProjections
 import org.jetbrains.kotlin.builtins.isExtensionFunctionType
 import org.jetbrains.kotlin.builtins.isFunctionType
 import org.jetbrains.kotlin.descriptors.FunctionDescriptor
 import org.jetbrains.kotlin.descriptors.SourceElement
 import org.jetbrains.kotlin.descriptors.ValueParameterDescriptor
-import org.jetbrains.kotlin.descriptors.annotations.AnnotationDescriptorImpl
 import org.jetbrains.kotlin.descriptors.annotations.Annotations
-import org.jetbrains.kotlin.descriptors.annotations.AnnotationsImpl
 import org.jetbrains.kotlin.descriptors.impl.ValueParameterDescriptorImpl
 import org.jetbrains.kotlin.name.Name
-import org.jetbrains.kotlin.types.*
+import org.jetbrains.kotlin.types.KotlinType
+import org.jetbrains.kotlin.types.TypeProjection
 
 fun createValueParametersForInvokeInFunctionType(
         functionDescriptor: FunctionDescriptor, parameterTypes: List<TypeProjection>
@@ -46,35 +43,6 @@ fun createValueParametersForInvokeInFunctionType(
     }
 }
 
-fun createFunctionType(
-        builtIns: KotlinBuiltIns,
-        annotations: Annotations,
-        receiverType: KotlinType?,
-        parameterTypes: List<KotlinType>,
-        parameterNames: List<Name>?,
-        returnType: KotlinType
-): SimpleType {
-    val arguments = getFunctionTypeArgumentProjections(receiverType, parameterTypes, parameterNames, returnType, builtIns)
-    val size = parameterTypes.size
-    val classDescriptor = builtIns.getFunction(if (receiverType == null) size else size + 1)
-
-    val typeAnnotations =
-            if (receiverType == null || annotations.findAnnotation(KotlinBuiltIns.FQ_NAMES.extensionFunctionType) != null) {
-                annotations
-            }
-            else {
-                val extensionFunctionAnnotation = AnnotationDescriptorImpl(
-                        builtIns.getBuiltInClassByName(KotlinBuiltIns.FQ_NAMES.extensionFunctionType.shortName()).defaultType,
-                        emptyMap(), SourceElement.NO_SOURCE
-                )
-
-                // TODO: preserve laziness of given annotations
-                AnnotationsImpl(annotations + extensionFunctionAnnotation)
-            }
-
-    return KotlinTypeFactory.simpleNotNullType(typeAnnotations, classDescriptor, arguments)
-}
-
 fun getValueParametersCountFromFunctionType(type: KotlinType): Int {
     assert(type.isFunctionType) { "Not a function type: $type" }
     // Function type arguments = receiver? + parameters + return-type