FIR: Make replace function accepting parameter with nullability as-is

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

@@ -67,7 +67,7 @@ fun transformFunctionDeclaration(transformName: String, returnType: String): Str
 
 fun Field.replaceFunctionDeclaration(): String {
     val capName = name.capitalize()
-    return "fun replace$capName(new$capName: $typeWithArgumentsWithoutNullablity)"
+    return "fun replace$capName(new$capName: $typeWithArguments)"
 }
 
 val Field.mutableType: String
@@ -107,8 +107,6 @@ val Importable.typeWithArguments: String
         else -> throw IllegalArgumentException()
     }
 
-val Importable.typeWithArgumentsWithoutNullablity: String get() = typeWithArguments.dropLastWhile { it == '?' }
-
 val ImplementationWithArg.generics: String
     get() = argument?.let { "<${it.type}>" } ?: ""
 
@@ -128,4 +126,4 @@ val Element.typeParameters: String
         ?: ""
 
 val Type.generics: String
-    get() = arguments.takeIf { it.isNotEmpty() }?.joinToString(",", "<", ">") ?: ""
+    get() = arguments.takeIf { it.isNotEmpty() }?.joinToString(",", "<", ">") ?: ""