Cleanup: post-cleanup after deprecation cleanup in compiler

Replace `takeIf { !expr }` with `takeUnless { expr }`.
Cleanup redundant parethesis as in `listOf((expr))`.
Replace `listOf(expr)` with `expr.let(::listOf)` where the former caused significant indentation change.

core/descriptors/src/org/jetbrains/kotlin/builtins/functionTypes.kt

@@ -166,7 +166,7 @@ fun getFunctionTypeArgumentProjections(
     arguments.addIfNotNull(receiverType?.asTypeProjection())
 
     parameterTypes.mapIndexedTo(arguments) { index, type ->
-        val name = parameterNames?.get(index)?.takeIf { !it.isSpecial }
+        val name = parameterNames?.get(index)?.takeUnless { it.isSpecial }
         val typeToUse = if (name != null) {
             val annotationClass = builtIns.getBuiltInClassByName(KotlinBuiltIns.FQ_NAMES.parameterName.shortName())
             val nameValue = ConstantValueFactory(builtIns).createStringValue(name.asString())

core/descriptors/src/org/jetbrains/kotlin/descriptors/VariableDescriptorWithAccessors.kt

@@ -33,4 +33,4 @@ interface VariableDescriptorWithAccessors : VariableDescriptor {
 }
 
 val VariableDescriptorWithAccessors.accessors: List<VariableAccessorDescriptor>
-    get() = listOfNotNull(getter) + listOfNotNull(setter)
+    get() = listOfNotNull(getter, setter)